intellectual vs doer

intellectual and doer both are nouns.

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

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

Other hypernyms of intellectual include actor, worker.

intellectual (noun)	doer (noun)
a person who uses the mind creatively	a person who acts and gets things done

intellectual (adjective)	doer (adjective)
appealing to or using the intellect
involving intelligence rather than emotions or instinct
of or associated with or requiring the use of the mind