marine museum vs vivarium

marine museum and vivarium both are nouns.

Word	Noun	Adjective	Verb	Adverb
marine museum	Yes	No	No	No
vivarium	Yes	No	No	No

As nouns, vivarium is a hypernym of marine museum; that is, vivarium is a word with a broader meaning than marine museum:

marine museum: a tank or pool or bowl filled with water for keeping live fish and underwater animals
vivarium: an indoor enclosure for keeping and raising living animals and plants and observing them under natural conditions

Other hypernyms of marine museum include storage tank, tank.

marine museum (noun)	vivarium (noun)
a tank or pool or bowl filled with water for keeping live fish and underwater animals	an indoor enclosure for keeping and raising living animals and plants and observing them under natural conditions