Pinus vs genus Pinus

Pinus and genus Pinus both are nouns.

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

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

Pinus and genus Pinus: type genus of the Pinaceae: large genus of true pines

Pinus (noun)	genus Pinus (noun)
type genus of the Pinaceae: large genus of true pines	type genus of the Pinaceae: large genus of true pines