brute vs invertebrate

brute and invertebrate both are nouns.

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

As nouns, invertebrate is a hyponym of brute; that is, invertebrate is a word with a more specific, narrower meaning than brute:

brute: a living organism characterized by voluntary movement
invertebrate: any animal lacking a backbone or notochord; the term is not used as a scientific classification

brute (noun)	invertebrate (noun)
a living organism characterized by voluntary movement	any animal lacking a backbone or notochord; the term is not used as a scientific classification
a cruelly rapacious person

brute (adjective)	invertebrate (adjective)
resembling a beast; showing lack of human sensibility	lacking a backbone or spinal column