debtor vs worker

debtor and worker both are nouns.

Word	Noun	Adjective	Verb	Adverb
debtor	Yes	No	No	No
worker	Yes	No	No	No

As nouns, worker is a hypernym of debtor; that is, worker is a word with a broader meaning than debtor:

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

Other hypernyms of debtor include actor, doer.

debtor (noun)	worker (noun)
a person who owes a creditor; someone who has the obligation of paying a debt	sterile member of a colony of social insects that forages for food and cares for the larvae
	a person who works at a specific occupation
	a member of the working class (not necessarily employed)
	a person who acts and gets things done