refuge vs harbour

refuge and harbour both are nouns.

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

As nouns, harbour is a hyponym of refuge; that is, harbour is a word with a more specific, narrower meaning than refuge:

Other hyponyms of refuge include harbor, safehold, safe house.

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

refuge (verb)	harbour (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)