chordate vs craniate

chordate and craniate both are nouns.

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

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

chordate: any animal of the phylum Chordata having a notochord or spinal column
craniate: 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, vertebrate.

chordate (noun)	craniate (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)	craniate (adjective)
of or relating to or characteristic of the Chordata