western tamarack vs Larix occidentalis

western tamarack and Larix occidentalis both are nouns.

Word	Noun	Adjective	Verb	Adverb
western tamarack	Yes	No	No	No
Larix occidentalis	Yes	No	No	No

As nouns, western tamarack and Larix occidentalis are synonyms defined as:

western tamarack and Larix occidentalis: tall larch of western North America have pale green sharply pointed leaves and oblong cones; an important timber tree

Other synonyms of western tamarack include Oregon larch, western larch.

western tamarack (noun)	Larix occidentalis (noun)
tall larch of western North America have pale green sharply pointed leaves and oblong cones; an important timber tree	tall larch of western North America have pale green sharply pointed leaves and oblong cones; an important timber tree