geek vs doer

geek and doer both are nouns.

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

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

Other hypernyms of geek include actor, worker.

geek (noun)	doer (noun)
a person with an unusual or odd personality	a person who acts and gets things done
a carnival performer who does disgusting acts

geek (verb)	doer (verb)
to be intoxicated