Firmiana vs Firmiana simplex

Firmiana and Firmiana simplex both are nouns.

Word	Noun	Adjective	Verb	Adverb
Firmiana	Yes	No	No	No
Firmiana simplex	Yes	No	No	No

Firmiana (noun)	Firmiana simplex (noun)
small genus of Asian trees or shrubs	deciduous tree widely grown in southern United States as an ornamental for its handsome maplelike foliage and long racemes of yellow-green flowers followed by curious leaflike pods