white fir vs Abies concolor

white fir and Abies concolor both are nouns.

Word	Noun	Adjective	Verb	Adverb
white fir	Yes	No	No	No
Abies concolor	Yes	No	No	No

As nouns, white fir and Abies concolor are synonyms defined as:

white fir and Abies concolor: medium to tall fir of central to western United States having a narrow erect crown and soft wood

Other synonyms of white fir include Abies lowiana, California white fir, Colorado fir.

white fir (noun)	Abies concolor (noun)
medium to tall fir of western North America having a conic crown and branches in tiers; leaves smell of orange when crushed	medium to tall fir of central to western United States having a narrow erect crown and soft wood
medium to tall fir of central to western United States having a narrow erect crown and soft wood