rester vs doer

rester and doer both are nouns.

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

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

Other hypernyms of rester include actor, worker.

rester (noun)	doer (noun)
a person who rests	a person who acts and gets things done