aspen poplar vs silver-leaved poplar

aspen poplar and silver-leaved poplar both are nouns.

Word	Noun	Adjective	Verb	Adverb
aspen poplar	Yes	No	No	No
silver-leaved poplar	Yes	No	No	No

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

aspen poplar 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 aspen poplar include abele, Populus alba, white aspen, white poplar.

aspen poplar (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