Colorado fir vs white fir

Colorado fir and white fir both are nouns.

Word	Noun	Adjective	Verb	Adverb
Colorado fir	Yes	No	No	No
white fir	Yes	No	No	No

As nouns, Colorado fir and white fir are synonyms defined as:

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

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

Colorado fir (noun)	white fir (noun)
medium to tall fir of central to western United States having a narrow erect crown and soft wood	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