Siberian pea tree vs Caragana arborescens

Siberian pea tree and Caragana arborescens both are nouns.

Word	Noun	Adjective	Verb	Adverb
Siberian pea tree	Yes	No	No	No
Caragana arborescens	Yes	No	No	No

As nouns, Siberian pea tree and Caragana arborescens are synonyms defined as:

Siberian pea tree and Caragana arborescens: large spiny shrub of eastern Asia having clusters of yellow flowers; often cultivated in shelterbelts and hedges

Siberian pea tree (noun)	Caragana arborescens (noun)
large spiny shrub of eastern Asia having clusters of yellow flowers; often cultivated in shelterbelts and hedges	large spiny shrub of eastern Asia having clusters of yellow flowers; often cultivated in shelterbelts and hedges