creditor vs doer

creditor and doer both are nouns.

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

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

creditor: a person to whom money is owed by a debtor; someone to whom an obligation exists
doer: a person who acts and gets things done

Other hypernyms of creditor include actor, worker.

creditor (noun)	doer (noun)
a person to whom money is owed by a debtor; someone to whom an obligation exists	a person who acts and gets things done