grand fir vs lowland fir

grand fir and lowland fir both are nouns.

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

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

grand fir and lowland 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 white fir.

grand fir (noun)	lowland 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