---
title: density — school dictionary · trees and pragmatics
description: «density» in the school dictionary: Density is how much mass is packed into a certain amount of space; dense things are heavy for their size. Every meaning for a pupil with its dependency tree and pragmatics.
---

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# density

<!-- .vintro -->
**Who acts:** Density, dense things, close things, Lead, Ice, Oil · **What happens:** be, pack, amount, have, float, make · **To what, where:** much mass, certain amount, space, area, high density, lower density

<!-- .vabout -->
«density» in the school dictionary: its 2 meanings for a pupil and its 6 examples, every sentence parsed by Mova itself — its syntax tree, a dependency tree in the style of Universal Dependencies, and its pragmatics clause by clause. The word in the dictionary, with its sense in the lessons: [density in the school dictionary](https://md.mova.elamur.ai/free/en/dictionaries/school/w/density.md).

## Meaning 1 {#m1}

<!-- .ven lang=en -->
Density is how much mass is packed into a certain amount of space; dense things are heavy for their size.

<!-- fold The tree, 20 words -->
```conllu
# sent_id = dict:school:density:m1:1
# text = Density is how much mass is packed into a certain amount of space; dense things are heavy for their size.
1	Density	density	NOUN	NN	Number=Sing	5	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	cop	_	_
3	how	how	ADV	WRB	PronType=Int	4	advmod	_	_
4	much	much	ADJ	JJ	Degree=Pos	5	amod	_	_
5	mass	mass	NOUN	NN	Number=Sing	7	nsubj	_	_
6	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	7	aux:pass	_	_
7	packed	pack	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
8	into	into	ADP	IN	_	11	case	_	_
9	a	a	DET	DT	Definite=Ind|PronType=Art	11	det	_	_
10	certain	certain	ADJ	JJ	Degree=Pos	11	amod	_	_
11	amount	amount	NOUN	NN	Number=Sing	7	obl	_	_
12	of	of	ADP	IN	_	13	case	_	_
13	space	space	NOUN	NN	Number=Sing	11	nmod	_	SpaceAfter=No
14	;	;	PUNCT	:	_	18	punct	_	_
15	dense	dense	ADJ	JJ	Degree=Pos	16	amod	_	_
16	things	thing	NOUN	NNS	Number=Plur	18	nsubj	_	_
17	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	18	cop	_	_
18	heavy	heavy	ADJ	JJ	Degree=Pos	7	advcl	_	_
19	for	for	ADP	IN	_	21	case	_	_
20	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	21	nmod:poss	_	_
21	size	size	NOUN	NN	Number=Sing	18	obl	_	SpaceAfter=No
22	.	.	PUNCT	.	_	7	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | Density | much mass |  |  |  |  | tree rules |
| 2 | **pack** | present · passive |  | much mass |  | a certain amount of space |  |  | vn spray-9.7-1-1 «NP V NP PP.destination»: subject=Theme into amount=Destination |
| 3 | **is** | present | dense things |  |  |  |  | for things's size; heavy *property* | tree rules |
| 4 | **amount** |  |  | space |  |  |  |  | nom amount «possession transitive»: of=patient |

<!-- .note -->
One row per clause the reader finds. «not said here»: a role filled from the clause above. «roles by»: a VerbNet class and frame when one fits the verb, else the reader's rules on the tree.

## Meaning 2 {#m2}

<!-- .ven lang=en -->
Density is also how crowded or close together things are in an area (population density).

<!-- fold The tree, 15 words -->
```conllu
# sent_id = dict:school:density:m2:1
# text = Density is also how crowded or close together things are in an area (population density).
1	Density	density	NOUN	NN	Number=Sing	5	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	cop	_	_
3	also	also	ADV	RB	_	5	advmod	_	_
4	how	how	ADV	WRB	PronType=Int	5	advmod	_	_
5	crowded	crowded	ADJ	JJ	Degree=Pos	0	root	_	_
6	or	or	CCONJ	CC	_	7	cc	_	_
7	close	close	ADJ	JJ	Degree=Pos	9	amod	_	_
8	together	together	ADV	RB	_	7	advmod	_	_
9	things	thing	NOUN	NNS	Number=Plur	13	nsubj	_	_
10	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	13	cop	_	_
11	in	in	ADP	IN	_	13	case	_	_
12	an	a	DET	DT	Definite=Ind|PronType=Art	13	det	_	_
13	area	area	NOUN	NN	Number=Sing	5	parataxis	_	_
14	(	(	PUNCT	-LRB-	_	16	punct	_	SpaceAfter=No
15	population	population	NOUN	NN	Number=Sing	16	compound	_	_
16	density	density	NOUN	NN	Number=Sing	13	appos	_	SpaceAfter=No
17	)	)	PUNCT	-RRB-	_	16	punct	_	SpaceAfter=No
18	.	.	PUNCT	.	_	5	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | Density |  |  |  |  | crowded *property* | tree rules |
| 2 | **is** | present | close things |  |  | a area |  |  | tree rules |

## Example 1 {#x1}

<!-- .ven lang=en -->
Lead has a very high density.

```conllu
# sent_id = dict:school:density:x1:1
# text = Lead has a very high density.
1	Lead	lead	NOUN	NN	Number=Sing	2	nsubj	_	_
2	has	have	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	a	a	DET	DT	Definite=Ind|PronType=Art	6	det	_	_
4	very	very	ADV	RB	_	5	advmod	_	_
5	high	high	ADJ	JJ	Degree=Pos	6	amod	_	_
6	density	density	NOUN	NN	Number=Sing	2	obj	_	SpaceAfter=No
7	.	.	PUNCT	.	_	2	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **have** | present | Lead | a high density |  |  |  |  | vn birth-28.2-1 «NP V NP»: agent=Agent density=Patient |

## Example 2 {#x2}

<!-- .ven lang=en -->
Ice floats because its density is lower than water's.

```conllu
# sent_id = dict:school:density:x2:1
# text = Ice floats because its density is lower than water's.
1	Ice	ice	NOUN	NN	Number=Sing	2	nsubj	_	_
2	floats	float	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	because	because	SCONJ	IN	_	7	mark	_	_
4	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	5	nmod:poss	_	_
5	density	density	NOUN	NN	Number=Sing	7	nsubj	_	_
6	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	7	cop	_	_
7	lower	low	ADJ	JJR	Degree=Cmp	2	advcl	_	_
8	than	than	ADP	IN	_	9	case	_	_
9	water	water	NOUN	NN	Number=Sing	7	obl	_	SpaceAfter=No
10	's	's	PART	POS	_	9	case	_	SpaceAfter=No
11	.	.	PUNCT	.	_	2	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **float** | present | Ice |  |  |  |  |  | vn run-51.3.2-2 «NP V»: agent=Theme |
| 2 | **is** | present | Ice's density |  |  |  |  | than water; low *property* | tree rules |

## Example 3 {#x3}

<!-- .ven lang=en -->
Oil has a lower density than water, so it floats on top.

```conllu
# sent_id = dict:school:density:x3:1
# text = Oil has a lower density than water, so it floats on top.
1	Oil	oil	NOUN	NN	Number=Sing	2	nsubj	_	_
2	has	have	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	a	a	DET	DT	Definite=Ind|PronType=Art	5	det	_	_
4	lower	low	ADJ	JJR	Degree=Cmp	5	amod	_	_
5	density	density	NOUN	NN	Number=Sing	2	obj	_	_
6	than	than	ADP	IN	_	7	case	_	_
7	water	water	NOUN	NN	Number=Sing	5	nmod	_	SpaceAfter=No
8	,	,	PUNCT	,	_	11	punct	_	_
9	so	so	ADV	RB	_	11	advmod	_	_
10	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	11	nsubj	_	_
11	floats	float	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	2	conj	_	_
12	on	on	ADP	IN	_	13	case	_	_
13	top	top	NOUN	NN	Number=Sing	11	obl	_	SpaceAfter=No
14	.	.	PUNCT	.	_	2	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **have** | present | Oil | a lower density |  |  |  | than water | vn birth-28.2-1 «NP V NP»: agent=Agent density=Patient |
| 2 | **float** | present | Oil |  |  | top |  |  | vn run-51.3.2-2 «NP V PP.location»: agent=Theme on top=Trajectory |

## Example 4 {#x4}

<!-- .ven lang=en -->
Cities have a high population density.

```conllu
# sent_id = dict:school:density:x4:1
# text = Cities have a high population density.
1	Cities	city	NOUN	NNS	Number=Plur	2	nsubj	_	_
2	have	have	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	a	a	DET	DT	Definite=Ind|PronType=Art	6	det	_	_
4	high	high	ADJ	JJ	Degree=Pos	6	amod	_	_
5	population	population	NOUN	NN	Number=Sing	6	compound	_	_
6	density	density	NOUN	NN	Number=Sing	2	obj	_	SpaceAfter=No
7	.	.	PUNCT	.	_	2	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **have** | present | Cities | a high population density |  |  |  |  | vn birth-28.2-1 «NP V NP»: agent=Agent density=Patient |

## Example 5 {#x5}

<!-- .ven lang=en -->
The density of trees in the jungle makes it dark.

```conllu
# sent_id = dict:school:density:x5:1
# text = The density of trees in the jungle makes it dark.
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	density	density	NOUN	NN	Number=Sing	8	nsubj	_	_
3	of	of	ADP	IN	_	4	case	_	_
4	trees	tree	NOUN	NNS	Number=Plur	2	nmod	_	_
5	in	in	ADP	IN	_	7	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	jungle	jungle	NOUN	NN	Number=Sing	2	nmod	_	_
8	makes	make	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
9	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	8	obj	_	_
10	dark	dark	ADJ	JJ	Degree=Pos	8	xcomp	_	SpaceAfter=No
11	.	.	PUNCT	.	_	8	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | present | the density of trees in the jungle | jungle |  |  |  | dark *property* | vn build-26.1-1 «NP.asset V NP»: agent=Asset it=Product |

## Example 6 {#x6}

<!-- .ven lang=en -->
We compared the density of different liquids in a jar.

```conllu
# sent_id = dict:school:density:x6:1
# text = We compared the density of different liquids in a jar.
1	We	we	PRON	PRP	Case=Nom|Number=Plur|Person=1|PronType=Prs	2	nsubj	_	_
2	compared	compare	VERB	VBD	Mood=Ind|Number=Plur|Person=1|Tense=Past|VerbForm=Fin	0	root	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	density	density	NOUN	NN	Number=Sing	2	obj	_	_
5	of	of	ADP	IN	_	7	case	_	_
6	different	different	ADJ	JJ	Degree=Pos	7	amod	_	_
7	liquids	liquid	NOUN	NNS	Number=Plur	4	nmod	_	_
8	in	in	ADP	IN	_	10	case	_	_
9	a	a	DET	DT	Definite=Ind|PronType=Art	10	det	_	_
10	jar	jar	NOUN	NN	Number=Sing	2	obl	_	SpaceAfter=No
11	.	.	PUNCT	.	_	2	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **compare** | past | We | the density of different liquids |  | a jar |  |  | vn amalgamate-22.2-2 «NP V NP»: agent=Agent density=Patient |

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**Text:** the school dictionary of Mova's schools (`world/data/dictionary-schools/`), written for Mova. **Trees:** Mova's own parse — the `en` model on the CPU, when the site is built — not checked by a teacher; they may be wrong. **Frames:** Mova's frames reader (`prag`), each meaning and example read on its own. Elamur Cosmic License.

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