metazoan vs beast

metazoan and beast both are nouns.

Word	Noun	Adjective	Verb	Adverb
metazoan	Yes	No	No	No
beast	Yes	No	No	No

As nouns, beast is a hypernym of metazoan; that is, beast is a word with a broader meaning than metazoan:

metazoan: any animal of the subkingdom Metazoa; all animals except protozoans and sponges
beast: a living organism characterized by voluntary movement

Other hypernyms of metazoan include animal, animate being, brute, creature, fauna.

metazoan (noun)	beast (noun)
any animal of the subkingdom Metazoa; all animals except protozoans and sponges	a living organism characterized by voluntary movement
	a cruelly rapacious person