red silver fir vs Pacific silver fir

red silver fir and Pacific silver fir both are nouns.

Word	Noun	Adjective	Verb	Adverb
red silver fir	Yes	No	No	No
Pacific silver fir	Yes	No	No	No

As nouns, red silver fir and Pacific silver fir are synonyms defined as:

red silver fir and Pacific silver fir: medium to tall fir of western North America having a conic crown and branches in tiers; leaves smell of orange when crushed

Other synonyms of red silver fir include Abies amabilis, amabilis fir, Christmas tree, white fir.

red silver fir (noun)	Pacific silver fir (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 western North America having a conic crown and branches in tiers; leaves smell of orange when crushed