genus Solanum vs Solanum

genus Solanum and Solanum both are nouns.

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

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

genus Solanum and Solanum: type genus of the Solanaceae: nightshade, potato, eggplant, bittersweet

genus Solanum (noun)	Solanum (noun)
type genus of the Solanaceae: nightshade, potato, eggplant, bittersweet	type genus of the Solanaceae: nightshade, potato, eggplant, bittersweet