genus Anguis vs reptile genus

genus Anguis and reptile genus both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Anguis	Yes	No	No	No
reptile genus	Yes	No	No	No

As nouns, reptile genus is a hypernym of genus Anguis; that is, reptile genus is a word with a broader meaning than genus Anguis:

genus Anguis (noun)	reptile genus (noun)
type genus of the Anguidae: blindworms	a genus of reptiles