bribe vs pay off

bribe is a noun but pay off is not a noun.

Word	Noun	Adjective	Verb	Adverb
bribe	Yes	No	Yes	No
pay off	No	No	Yes	No

As verbs, pay off is a hyponym of bribe; that is, pay off is a word with a more specific, narrower meaning than bribe:

Other hyponyms of bribe include sop, buy off.

bribe (noun)	pay off (noun)
payment made to a person in a position of trust to corrupt his judgment

bribe (verb)	pay off (verb)
make illegal payments to in exchange for favors or influence	take vengeance on or get even
	eliminate by paying off (debts)
	pay someone with influence in order to receive a favor
	yield a profit or result
	pay off (loans or promissory notes)
	do or give something to somebody in return