Hosta vs genus Hosta

Hosta and genus Hosta both are nouns.

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

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

Hosta and genus Hosta: robust east Asian clump-forming perennial herbs having racemose flowers: plantain lilies; sometimes placed in family Hostaceae

Other synonyms of Hosta include Funka, genus Funka.

Hosta (noun)	genus Hosta (noun)
robust east Asian clump-forming perennial herbs having racemose flowers: plantain lilies; sometimes placed in family Hostaceae	robust east Asian clump-forming perennial herbs having racemose flowers: plantain lilies; sometimes placed in family Hostaceae