Abies lasiocarpa vs subalpine fir

Abies lasiocarpa and subalpine fir both are nouns.

Word	Noun	Adjective	Verb	Adverb
Abies lasiocarpa	Yes	No	No	No
subalpine fir	Yes	No	No	No

As nouns, Abies lasiocarpa and subalpine fir are synonyms defined as:

Abies lasiocarpa and subalpine fir: medium-tall timber tree of the Rocky Mountains having a narrowly conic to columnar crown

Other synonyms of Abies lasiocarpa include Alpine fir.

Abies lasiocarpa (noun)	subalpine fir (noun)
medium-tall timber tree of the Rocky Mountains having a narrowly conic to columnar crown	medium-tall timber tree of the Rocky Mountains having a narrowly conic to columnar crown