sex vs sperm cell

sex and sperm cell both are nouns.

Word	Noun	Adjective	Verb	Adverb
sex	Yes	No	Yes	No
sperm cell	Yes	No	No	No

sex (noun)	sperm cell (noun)
activities associated with sexual intercourse	the male reproductive cell; the male gamete
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)	sperm cell (verb)
tell the sex (of young chickens)
to evoke sexual feelings