debitor vs doer

debitor and doer both are nouns.

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

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

debitor: a person who owes a creditor; someone who has the obligation of paying a debt
doer: a person who acts and gets things done

Other hypernyms of debitor include actor, worker.

debitor (noun)	doer (noun)
a person who owes a creditor; someone who has the obligation of paying a debt	a person who acts and gets things done