shelter vs haven

shelter and haven both are nouns.

Word	Noun	Adjective	Verb	Adverb
shelter	Yes	No	Yes	No
haven	Yes	No	No	No

As nouns, haven is a hyponym of shelter; that is, haven is a word with a more specific, narrower meaning than shelter:

shelter (noun)	haven (noun)
a structure that provides privacy and protection from danger	a shelter serving as a place of safety or sanctuary
protective covering that provides protection from the weather	a sheltered port where ships can take on or discharge cargo
temporary housing for homeless or displaced persons
a way of organizing business to reduce the taxes it must pay on current earnings
the condition of being protected

shelter (verb)	haven (verb)
invest (money) so that it is not taxable
provide shelter for