hunting dog vs Canis familiaris

hunting dog and Canis familiaris both are nouns.

Word	Noun	Adjective	Verb	Adverb
hunting dog	Yes	No	No	No
Canis familiaris	Yes	No	No	No

As nouns, Canis familiaris is a hypernym of hunting dog; that is, Canis familiaris is a word with a broader meaning than hunting dog:

hunting dog: a dog used in hunting game
Canis familiaris: a member of the genus Canis (probably descended from the common wolf) that has been domesticated by man since prehistoric times; occurs in many breeds

Other hypernyms of hunting dog include dog, domestic dog.

hunting dog (noun)	Canis familiaris (noun)
a dog used in hunting game	a member of the genus Canis (probably descended from the common wolf) that has been domesticated by man since prehistoric times; occurs in many breeds