individualist vs doer

individualist and doer both are nouns.

Word	Noun	Adjective	Verb	Adverb
individualist	Yes	Yes	No	No
doer	Yes	No	No	No

As nouns, doer is a hypernym of individualist; that is, doer is a word with a broader meaning than individualist:

Other hypernyms of individualist include actor, worker.

individualist (noun)	doer (noun)
a person who pursues independent thought or action	a person who acts and gets things done

individualist (adjective)	doer (adjective)
marked by or expressing individuality