marine museum vs aquarium

marine museum and aquarium both are nouns.

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

As nouns, marine museum and aquarium are synonyms defined as:

marine museum and aquarium: a tank or pool or bowl filled with water for keeping live fish and underwater animals

Other synonyms of marine museum include fish tank.

marine museum (noun)	aquarium (noun)
a tank or pool or bowl filled with water for keeping live fish and underwater animals	a tank or pool or bowl filled with water for keeping live fish and underwater animals