sex vs sanitary napkin

sex and sanitary napkin both are nouns.

Word	Noun	Adjective	Verb	Adverb
sex	Yes	No	Yes	No
sanitary napkin	Yes	No	No	No

sex (noun)	sanitary napkin (noun)
activities associated with sexual intercourse	a disposable absorbent pad (trade name Kotex); worn to absorb menstrual flow
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)	sanitary napkin (verb)
tell the sex (of young chickens)
to evoke sexual feelings