winner vs great

winner and great both are nouns.

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

As nouns, great is a hyponym of winner; that is, great is a word with a more specific, narrower meaning than winner:

Other hyponyms of winner include first lady, highflier, highflyer, natural, sleeper.

winner (noun)	great (noun)
the contestant who wins the contest	a person who has achieved distinction and honor in some field
a gambler who wins a bet
a person with a record of successes

winner (adjective)	great (adjective)
	excellent
	in an advanced stage of pregnancy
	uppercase
	remarkable or out of the ordinary in degree or magnitude or effect
	of major significance or importance
	relatively large in size or number or extent; larger than others of its kind