harbour vs asylum

harbour and asylum both are nouns.

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

As nouns, asylum is a hypernym of harbour; that is, asylum is a word with a broader meaning than harbour:

Other hypernyms of harbour include refuge, sanctuary.

harbour (noun)	asylum (noun)
a place of refuge and comfort and security	a hospital for mentally incompetent or unbalanced person
a sheltered port where ships can take on or discharge cargo	a shelter from danger or hardship

harbour (verb)	asylum (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)