congratulate vs compliment

congratulate is not a noun while compliment is a noun.

Word	Noun	Adjective	Verb	Adverb
congratulate	No	No	Yes	No
compliment	Yes	No	Yes	No

As verbs, congratulate and compliment are synonyms defined as:

congratulate and compliment: say something to someone that expresses praise

congratulate (noun)	compliment (noun)
	a remark (or act) expressing praise and admiration

congratulate (verb)	compliment (verb)
say something to someone that expresses praise	say something to someone that expresses praise
express congratulations	express respect or esteem for
pride or congratulate (oneself) for an achievement
be proud of