balsam poplar vs hackmatack

balsam poplar and hackmatack both are nouns.

Word	Noun	Adjective	Verb	Adverb
balsam poplar	Yes	No	No	No
hackmatack	Yes	No	No	No

As nouns, balsam poplar and hackmatack are synonyms defined as:

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

Other synonyms of balsam poplar include Populus balsamifera, tacamahac.

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