brute vs organism

brute and organism both are nouns.

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

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

brute: a living organism characterized by voluntary movement
organism: a living thing that has (or can develop) the ability to act or function independently

Other hypernyms of brute include being.

brute (noun)	organism (noun)
a living organism characterized by voluntary movement	a living thing that has (or can develop) the ability to act or function independently
a cruelly rapacious person	a system considered analogous in structure or function to a living body

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