tear gas vs teargas

tear gas and teargas both are nouns.

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

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

tear gas and teargas: 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, lacrimator.

tear gas (noun)	teargas (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

tear gas (verb)	teargas (verb)
	attack with teargas; subject to teargas fumes