grease one's palms vs bribe

grease one's palms is not a noun while bribe is a noun.

Word	Noun	Adjective	Verb	Adverb
grease one's palms	No	No	Yes	No
bribe	Yes	No	Yes	No

As verbs, grease one's palms and bribe are synonyms defined as:

grease one's palms and bribe: make illegal payments to in exchange for favors or influence

Other synonyms of grease one's palms include buy, corrupt.

grease one's palms (noun)	bribe (noun)
	payment made to a person in a position of trust to corrupt his judgment

grease one's palms (verb)	bribe (verb)
make illegal payments to in exchange for favors or influence	make illegal payments to in exchange for favors or influence