Western balsam poplar vs Populus trichocarpa

Western balsam poplar and Populus trichocarpa both are nouns.

Word	Noun	Adjective	Verb	Adverb
Western balsam poplar	Yes	No	No	No
Populus trichocarpa	Yes	No	No	No

As nouns, Western balsam poplar and Populus trichocarpa are synonyms defined as:

Western balsam poplar and Populus trichocarpa: cottonwood of western North America with dark green leaves shining above and rusty or silvery beneath

Other synonyms of Western balsam poplar include black cottonwood.

Western balsam poplar (noun)	Populus trichocarpa (noun)
cottonwood of western North America with dark green leaves shining above and rusty or silvery beneath	cottonwood of western North America with dark green leaves shining above and rusty or silvery beneath