highflyer vs winner

highflyer and winner both are nouns.

Word	Noun	Adjective	Verb	Adverb
highflyer	Yes	No	No	No
winner	Yes	No	No	No

As nouns, winner is a hypernym of highflyer; that is, winner is a word with a broader meaning than highflyer:

Other hypernyms of highflyer include achiever, succeeder, success.

highflyer (noun)	winner (noun)
a person of great ability and ambition	the contestant who wins the contest
	a gambler who wins a bet
	a person with a record of successes