powerhouse vs worker

powerhouse and worker both are nouns.

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

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

Other hypernyms of powerhouse include actor, doer.

powerhouse (noun)	worker (noun)
an electrical generating station	sterile member of a colony of social insects that forages for food and cares for the larvae
a team considered to be the best of its class	a person who works at a specific occupation
a highly energetic and indefatigable person	a member of the working class (not necessarily employed)
	a person who acts and gets things done