felicitate vs congratulate

felicitate and congratulate both are verbs.

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

As verbs, felicitate and congratulate are synonyms defined as:

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