achiever vs great

achiever and great both are nouns.

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

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

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

achiever (noun)	great (noun)
a person with a record of successes	a person who has achieved distinction and honor in some field

achiever (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