backside vs sex

backside and sex both are nouns.

Word	Noun	Adjective	Verb	Adverb
backside	Yes	No	No	No
sex	Yes	No	Yes	No

backside (noun)	sex (noun)
the fleshy part of the human body that you sit on	activities associated with sexual intercourse
the side of an object that is opposite its front	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

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