arthropod vs invertebrate

arthropod and invertebrate both are nouns.

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

As nouns, invertebrate is a hypernym of arthropod; that is, invertebrate is a word with a broader meaning than arthropod:

arthropod: invertebrate having jointed limbs and a segmented body with an exoskeleton made of chitin
invertebrate: any animal lacking a backbone or notochord; the term is not used as a scientific classification

arthropod (noun)	invertebrate (noun)
invertebrate having jointed limbs and a segmented body with an exoskeleton made of chitin	any animal lacking a backbone or notochord; the term is not used as a scientific classification

arthropod (adjective)	invertebrate (adjective)
	lacking a backbone or spinal column