highflier vs success

highflier and success both are nouns.

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

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

Other hypernyms of highflier include achiever, succeeder, winner.

highflier (noun)	success (noun)
a person of great ability and ambition	an attainment that is successful
	an event that accomplishes its intended purpose
	a person with a record of successes
	a state of prosperity or fame