hackmatack vs Populus balsamifera

hackmatack and Populus balsamifera both are nouns.

Word	Noun	Adjective	Verb	Adverb
hackmatack	Yes	No	No	No
Populus balsamifera	Yes	No	No	No

As nouns, hackmatack and Populus balsamifera are synonyms defined as:

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

Other synonyms of hackmatack include balsam poplar, tacamahac.

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