chordate vs vertebrate

chordate and vertebrate both are nouns.

Word	Noun	Adjective	Verb	Adverb
chordate	Yes	Yes	No	No
vertebrate	Yes	Yes	No	No

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

chordate: any animal of the phylum Chordata having a notochord or spinal column
vertebrate: animals having a bony or cartilaginous skeleton with a segmented spinal column and a large brain enclosed in a skull or cranium

Other hyponyms of chordate include cephalochordate, tunicate, urochord, urochordate, craniate.

chordate (noun)	vertebrate (noun)
any animal of the phylum Chordata having a notochord or spinal column	animals having a bony or cartilaginous skeleton with a segmented spinal column and a large brain enclosed in a skull or cranium

chordate (adjective)	vertebrate (adjective)
of or relating to or characteristic of the Chordata	having a backbone or spinal column