harbor vs refuge

harbor and refuge both are nouns.

Word	Noun	Adjective	Verb	Adverb
harbor	Yes	No	Yes	No
refuge	Yes	No	No	No

As nouns, refuge is a hypernym of harbor; that is, refuge is a word with a broader meaning than harbor:

Other hypernyms of harbor include asylum, sanctuary.

harbor (noun)	refuge (noun)
a place of refuge and comfort and security	act of turning to for assistance
a sheltered port where ships can take on or discharge cargo	a shelter from danger or hardship
	something or someone turned to for assistance or security
	a safe place

harbor (verb)	refuge (verb)
maintain (a theory, thoughts, or feelings)
hold back a thought or feeling about
keep in one's possession; of animals
secretly shelter (as of fugitives or criminals)