pledgee vs worker

pledgee and worker both are nouns.

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

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

pledgee: someone to whom a pledge is made or someone with whom something is deposited as a pledge
worker: a person who acts and gets things done

Other hypernyms of pledgee include actor, doer.

pledgee (noun)	worker (noun)
someone to whom a pledge is made or someone with whom something is deposited as a pledge	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