Picea pungens vs Colorado blue spruce

Picea pungens and Colorado blue spruce both are nouns.

Word	Noun	Adjective	Verb	Adverb
Picea pungens	Yes	No	No	No
Colorado blue spruce	Yes	No	No	No

As nouns, Picea pungens and Colorado blue spruce are synonyms defined as:

Picea pungens and Colorado blue spruce: tall spruce with blue-green needles and dense conic crown; older trees become columnar with lower branches sweeping downward

Other synonyms of Picea pungens include Colorado spruce, silver spruce.

Picea pungens (noun)	Colorado blue spruce (noun)
tall spruce with blue-green needles and dense conic crown; older trees become columnar with lower branches sweeping downward	tall spruce with blue-green needles and dense conic crown; older trees become columnar with lower branches sweeping downward