molter vs brute

molter and brute both are nouns.

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

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

molter: an animal (especially birds and arthropods and reptiles) that periodically shed their outer layer (feathers or cuticle or skin or hair)
brute: a living organism characterized by voluntary movement

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

molter (noun)	brute (noun)
an animal (especially birds and arthropods and reptiles) that periodically shed their outer layer (feathers or cuticle or skin or hair)	a living organism characterized by voluntary movement
	a cruelly rapacious person

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