giant fir vs grand fir

giant fir and grand fir both are nouns.

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

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

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

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

giant fir (noun)	grand 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