lamprey vs jawless vertebrate

lamprey and jawless vertebrate both are nouns.

Word	Noun	Adjective	Verb	Adverb
lamprey	Yes	No	No	No
jawless vertebrate	Yes	No	No	No

As nouns, jawless vertebrate is a hypernym of lamprey; that is, jawless vertebrate is a word with a broader meaning than lamprey:

lamprey: primitive eellike freshwater or anadromous cyclostome having round sucking mouth with a rasping tongue
jawless vertebrate: eel-shaped vertebrate without jaws or paired appendages including the cyclostomes and some extinct forms

Other hypernyms of lamprey include agnathan, jawless fish.

lamprey (noun)	jawless vertebrate (noun)
primitive eellike freshwater or anadromous cyclostome having round sucking mouth with a rasping tongue	eel-shaped vertebrate without jaws or paired appendages including the cyclostomes and some extinct forms