Populus alba vs silver-leaved poplar

Populus alba and silver-leaved poplar both are nouns.

Word	Noun	Adjective	Verb	Adverb
Populus alba	Yes	No	No	No
silver-leaved poplar	Yes	No	No	No

As nouns, Populus alba and silver-leaved poplar are synonyms defined as:

Populus alba and silver-leaved poplar: a poplar that is widely cultivated in the United States; has white bark and leaves with whitish undersurfaces

Other synonyms of Populus alba include abele, aspen poplar, white aspen, white poplar.

Populus alba (noun)	silver-leaved poplar (noun)
a poplar that is widely cultivated in the United States; has white bark and leaves with whitish undersurfaces	a poplar that is widely cultivated in the United States; has white bark and leaves with whitish undersurfaces