Tsuga heterophylla vs west coast hemlock

Tsuga heterophylla and west coast hemlock both are nouns.

Word	Noun	Adjective	Verb	Adverb
Tsuga heterophylla	Yes	No	No	No
west coast hemlock	Yes	No	No	No

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

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

Other synonyms of Tsuga heterophylla include Pacific hemlock, western hemlock.

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