hexapod vs beast

hexapod and beast both are nouns.

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

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

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

hexapod (noun)	beast (noun)
an animal having six feet	a living organism characterized by voluntary movement
	a cruelly rapacious person