molter vs beast

molter and beast both are nouns.

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

As nouns, beast is a hypernym of molter; that is, beast 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)
beast: a living organism characterized by voluntary movement

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

molter (noun)	beast (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