tear gas vs lacrimator

tear gas and lacrimator both are nouns.

Word	Noun	Adjective	Verb	Adverb
tear gas	Yes	No	No	No
lacrimator	Yes	No	No	No

As nouns, tear gas and lacrimator are synonyms defined as:

tear gas and lacrimator: a gas that makes the eyes fill with tears but does not damage them; used in dispersing crowds

Other synonyms of tear gas include lachrymator, teargas.

tear gas (noun)	lacrimator (noun)
a gas that makes the eyes fill with tears but does not damage them; used in dispersing crowds	a gas that makes the eyes fill with tears but does not damage them; used in dispersing crowds