lachrymator vs CS gas

lachrymator and CS gas both are nouns.

Word	Noun	Adjective	Verb	Adverb
lachrymator	Yes	No	No	No
CS gas	Yes	No	No	No

As nouns, CS gas is a hyponym of lachrymator; that is, CS gas is a word with a more specific, narrower meaning than lachrymator:

lachrymator: a gas that makes the eyes fill with tears but does not damage them; used in dispersing crowds
CS gas: a tear gas that is stronger than CN gas but wears off faster; can be deployed by grenades or cluster bombs; can cause skin burns and fatal pulmonary edema

Other hyponyms of lachrymator include chlorobenzylidenemalononitrile, chloroacetophenone, CN gas, nitrochloromethane.

lachrymator (noun)	CS gas (noun)
a gas that makes the eyes fill with tears but does not damage them; used in dispersing crowds	a tear gas that is stronger than CN gas but wears off faster; can be deployed by grenades or cluster bombs; can cause skin burns and fatal pulmonary edema