balsam poplar vs Populus balsamifera

balsam poplar and Populus balsamifera both are nouns.

Word	Noun	Adjective	Verb	Adverb
balsam poplar	Yes	No	No	No
Populus balsamifera	Yes	No	No	No

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

balsam poplar and Populus balsamifera: poplar of northeastern North America with broad heart-shaped leaves

Other synonyms of balsam poplar include hackmatack, tacamahac.

balsam poplar (noun)	Populus balsamifera (noun)
poplar of northeastern North America with broad heart-shaped leaves	poplar of northeastern North America with broad heart-shaped leaves