compliment vs congratulate

compliment is a noun but congratulate is not a noun.

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

As verbs, compliment and congratulate are synonyms defined as:

compliment and congratulate: say something to someone that expresses praise

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

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