eastern spruce vs red spruce

eastern spruce and red spruce both are nouns.

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

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

eastern spruce and red 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, yellow spruce.

eastern spruce (noun)	red 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