harbor vs Boston Harbor

harbor and Boston Harbor both are nouns.

Word	Noun	Adjective	Verb	Adverb
harbor	Yes	No	Yes	No
Boston Harbor	Yes	No	No	No

harbor (noun)	Boston Harbor (noun)
a place of refuge and comfort and security	the seaport at Boston
a sheltered port where ships can take on or discharge cargo

harbor (verb)	Boston Harbor (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)