biped vs brute

biped and brute both are nouns.

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

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

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

biped (noun)	brute (noun)
an animal with two feet	a living organism characterized by voluntary movement
	a cruelly rapacious person

biped (adjective)	brute (adjective)
having two feet	resembling a beast; showing lack of human sensibility