offend vs boob

offend is not a noun while boob is a noun.

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

As verbs, boob is a hyponym of offend; that is, boob is a word with a more specific, narrower meaning than offend:

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

offend (verb)	boob (verb)
hurt the feelings of	commit a faux pas or a fault or make a serious mistake
cause to feel resentment or indignation
strike with disgust or revulsion
act in disregard of laws, rules, contracts, or promises