brute vs microorganism

brute and microorganism both are nouns.

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

brute (noun)	microorganism (noun)
a living organism characterized by voluntary movement	any organism of microscopic size
a cruelly rapacious person

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