harbourage vs harbour

harbourage and harbour both are nouns.

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

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

harbourage (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)