Larix laricina vs American larch

Larix laricina and American larch both are nouns.

Word	Noun	Adjective	Verb	Adverb
Larix laricina	Yes	No	No	No
American larch	Yes	No	No	No

As nouns, Larix laricina and American larch are synonyms defined as:

Larix laricina and American larch: medium-sized larch of Canada and northern United States including Alaska having a broad conic crown and rust-brown scaly bark

Other synonyms of Larix laricina include black larch, tamarack.

Larix laricina (noun)	American larch (noun)
medium-sized larch of Canada and northern United States including Alaska having a broad conic crown and rust-brown scaly bark	medium-sized larch of Canada and northern United States including Alaska having a broad conic crown and rust-brown scaly bark