Pacific hemlock vs Tsuga heterophylla

Pacific hemlock and Tsuga heterophylla both are nouns.

Word	Noun	Adjective	Verb	Adverb
Pacific hemlock	Yes	No	No	No
Tsuga heterophylla	Yes	No	No	No

As nouns, Pacific hemlock and Tsuga heterophylla are synonyms defined as:

Pacific hemlock and Tsuga heterophylla: tall evergreen of western North America; commercially important timber tree

Other synonyms of Pacific hemlock include west coast hemlock, western hemlock.

Pacific hemlock (noun)	Tsuga heterophylla (noun)
tall evergreen of western North America; commercially important timber tree	tall evergreen of western North America; commercially important timber tree