boob vs sex

boob and sex both are nouns.

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

boob (noun)	sex (noun)
either of two soft fleshy milk-secreting glandular organs on the chest of a woman	activities associated with sexual intercourse
an ignorant or foolish person	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

boob (verb)	sex (verb)
commit a faux pas or a fault or make a serious mistake	tell the sex (of young chickens)
	to evoke sexual feelings