coup vs success

coup and success both are nouns.

Word	Noun	Adjective	Verb	Adverb
coup	Yes	No	No	No
success	Yes	No	No	No

As nouns, success is a hypernym of coup; that is, success is a word with a broader meaning than coup:

coup (noun)	success (noun)
a sudden and decisive change of government illegally or by force	an attainment that is successful
a brilliant and notable success	an event that accomplishes its intended purpose
	a person with a record of successes
	a state of prosperity or fame