brute vs unattached

brute is a noun but unattached is not a noun.

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

brute (noun)	unattached (noun)
a living organism characterized by voluntary movement
a cruelly rapacious person

brute (adjective)	unattached (adjective)
resembling a beast; showing lack of human sensibility	not associated in an exclusive sexual relationship
	not fastened together
	(of animals) able to swim about; not attached