eastern spruce vs yellow spruce

eastern spruce and yellow spruce both are nouns.

Word	Noun	Adjective	Verb	Adverb
eastern spruce	Yes	No	No	No
yellow spruce	Yes	No	No	No

As nouns, eastern spruce and yellow spruce are synonyms defined as:

eastern spruce and yellow spruce: medium-sized spruce of eastern North America; chief lumber spruce of the area; source of pulpwood

Other synonyms of eastern spruce include Picea rubens, red spruce.

eastern spruce (noun)	yellow spruce (noun)
medium-sized spruce of eastern North America; chief lumber spruce of the area; source of pulpwood	medium-sized spruce of eastern North America; chief lumber spruce of the area; source of pulpwood