Canis vs genus Canis

Canis and genus Canis both are nouns.

Word	Noun	Adjective	Verb	Adverb
Canis	Yes	No	No	No
genus Canis	Yes	No	No	No

As nouns, Canis and genus Canis are synonyms defined as:

Canis and genus Canis: type genus of the Canidae: domestic and wild dogs, wolves, jackals

Canis (noun)	genus Canis (noun)
type genus of the Canidae: domestic and wild dogs, wolves, jackals	type genus of the Canidae: domestic and wild dogs, wolves, jackals