harbor vs sanctuary

harbor and sanctuary both are nouns.

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

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

Other hypernyms of harbor include asylum, refuge.

harbor (noun)	sanctuary (noun)
a place of refuge and comfort and security	area around the altar of a church for the clergy and choir; often enclosed by a lattice or railing
a sheltered port where ships can take on or discharge cargo	a shelter from danger or hardship
	a consecrated place where sacred objects are kept

harbor (verb)	sanctuary (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)