eastern hemlock vs Canadian hemlock

eastern hemlock and Canadian hemlock both are nouns.

Word	Noun	Adjective	Verb	Adverb
eastern hemlock	Yes	No	No	No
Canadian hemlock	Yes	No	No	No

As nouns, eastern hemlock and Canadian hemlock are synonyms defined as:

eastern hemlock and Canadian hemlock: common forest tree of the eastern United States and Canada; used especially for pulpwood

Other synonyms of eastern hemlock include spruce pine, Tsuga canadensis.

eastern hemlock (noun)	Canadian hemlock (noun)
common forest tree of the eastern United States and Canada; used especially for pulpwood	common forest tree of the eastern United States and Canada; used especially for pulpwood