sex vs gay woman

sex and gay woman both are nouns.

Word	Noun	Adjective	Verb	Adverb
sex	Yes	No	Yes	No
gay woman	Yes	No	No	No

sex (noun)	gay woman (noun)
activities associated with sexual intercourse	a female homosexual
the properties that distinguish organisms on the basis of their reproductive roles
all of the feelings resulting from the urge to gratify sexual impulses
either of the two categories (male or female) into which most organisms are divided

sex (verb)	gay woman (verb)
tell the sex (of young chickens)
to evoke sexual feelings