Parmelia vs genus Parmelia

Parmelia and genus Parmelia both are nouns.

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

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

Parmelia and genus Parmelia: type genus of the Parmeliaceae; a large genus of chiefly alpine foliaceous lichens

Parmelia (noun)	genus Parmelia (noun)
type genus of the Parmeliaceae; a large genus of chiefly alpine foliaceous lichens	type genus of the Parmeliaceae; a large genus of chiefly alpine foliaceous lichens