planner vs doer

planner and doer both are nouns.

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

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

Other hypernyms of planner include actor, worker.

planner (noun)	doer (noun)
a notebook for recording appointments and things to be done, etc.	a person who acts and gets things done
a person who makes plans