boob vs simpleton

boob and simpleton both are nouns.

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

As nouns, simpleton is a hypernym of boob; that is, simpleton is a word with a broader meaning than boob:

Other hypernyms of boob include simple.

boob (noun)	simpleton (noun)
either of two soft fleshy milk-secreting glandular organs on the chest of a woman	a person lacking intelligence or common sense
an ignorant or foolish person

boob (verb)	simpleton (verb)
commit a faux pas or a fault or make a serious mistake