Picea breweriana vs weeping spruce

Picea breweriana and weeping spruce both are nouns.

Word	Noun	Adjective	Verb	Adverb
Picea breweriana	Yes	No	No	No
weeping spruce	Yes	No	No	No

As nouns, Picea breweriana and weeping spruce are synonyms defined as:

Picea breweriana and weeping spruce: medium-sized spruce of California and Oregon having pendulous branches

Other synonyms of Picea breweriana include Brewer's spruce.

Picea breweriana (noun)	weeping spruce (noun)
medium-sized spruce of California and Oregon having pendulous branches	medium-sized spruce of California and Oregon having pendulous branches