grand fir vs lowland white fir

grand fir and lowland white fir both are nouns.

Word	Noun	Adjective	Verb	Adverb
grand fir	Yes	No	No	No
lowland white fir	Yes	No	No	No

As nouns, grand fir and lowland white fir are synonyms defined as:

grand fir and lowland white fir: lofty fir of the Pacific coast of northwestern America having long curving branches and deep green leaves

Other synonyms of grand fir include Abies grandis, giant fir, lowland fir.

grand fir (noun)	lowland white fir (noun)
lofty fir of the Pacific coast of northwestern America having long curving branches and deep green leaves	lofty fir of the Pacific coast of northwestern America having long curving branches and deep green leaves