harbor vs harborage

harbor and harborage both are nouns.

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

harbor (noun)	harborage (noun)
a place of refuge and comfort and security	(nautical) a place of refuge (as for a ship)
a sheltered port where ships can take on or discharge cargo

harbor (verb)	harborage (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)