scavenger vs beast

scavenger and beast both are nouns.

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

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

scavenger: any animal that feeds on refuse and other decaying organic matter
beast: a living organism characterized by voluntary movement

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

scavenger (noun)	beast (noun)
any animal that feeds on refuse and other decaying organic matter	a living organism characterized by voluntary movement
someone who collects things that have been discarded by others	a cruelly rapacious person
a chemical agent that is added to a chemical mixture to counteract the effects of impurities