black larch vs tamarack

black larch and tamarack both are nouns.

Word	Noun	Adjective	Verb	Adverb
black larch	Yes	No	No	No
tamarack	Yes	No	No	No

As nouns, black larch and tamarack are synonyms defined as:

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

Other synonyms of black larch include American larch, Larix laricina.

black larch (noun)	tamarack (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