metazoan vs brute

metazoan and brute both are nouns.

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

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

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

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

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

metazoan (adjective)	brute (adjective)
	resembling a beast; showing lack of human sensibility