thoroughbred vs beast

thoroughbred and beast both are nouns.

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

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

thoroughbred: a pedigreed animal of unmixed lineage; used especially of horses
beast: a living organism characterized by voluntary movement

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

thoroughbred (noun)	beast (noun)
a pedigreed animal of unmixed lineage; used especially of horses	a living organism characterized by voluntary movement
a racehorse belonging to a breed that originated from a cross between Arabian stallions and English mares	a cruelly rapacious person
a well-bred person

thoroughbred (adjective)	beast (adjective)
having a list of ancestors as proof of being a purebred animal