picker vs doer

picker and doer both are nouns.

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

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

Other hypernyms of picker include actor, worker.

picker (noun)	doer (noun)
someone who gathers crops or fruits etc.	a person who acts and gets things done
a person who chooses or selects out