grinner vs doer

grinner and doer both are nouns.

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

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

Other hypernyms of grinner include actor, worker.

grinner (noun)	doer (noun)
a person who grins	a person who acts and gets things done