keep vs harbour

keep and harbour both are nouns.

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

As verbs, harbour is a hyponym of keep; that is, harbour is a word with a more specific, narrower meaning than keep:

keep (noun)	harbour (noun)
the main tower within the walls of a medieval castle or fortress	a place of refuge and comfort and security
a cell in a jail or prison	a sheltered port where ships can take on or discharge cargo
the financial means whereby one lives

keep (verb)	harbour (verb)
prevent (food) from rotting	maintain (a theory, thoughts, or feelings)
prevent the action or expression of	hold back a thought or feeling about
stick to correctly or closely	keep in one's possession; of animals
maintain by writing regular records	secretly shelter (as of fugitives or criminals)
supply with necessities and support
hold and prevent from leaving
retain possession of
look after; be the keeper of; have charge of
retain rights to
maintain for use and service
have as a supply
store or keep customarily
stop (someone or something) from doing something or being in a certain state
allow to remain in a place or position or maintain a property or feature
conform one's action or practice to
behave as expected during of holidays or rites
cause to continue in a certain state, position, or activity
supply with room and board
maintain in safety from injury, harm, or danger
fail to spoil or rot
continue a certain state, condition, or activity
to rear