Toxicodendron diversilobum vs western poison oak

Toxicodendron diversilobum and western poison oak both are nouns.

Word	Noun	Adjective	Verb	Adverb
Toxicodendron diversilobum	Yes	No	No	No
western poison oak	Yes	No	No	No

As nouns, Toxicodendron diversilobum and western poison oak are synonyms defined as:

Toxicodendron diversilobum and western poison oak: poisonous shrub of the Pacific coast of North America that causes a rash on contact

Other synonyms of Toxicodendron diversilobum include Rhus diversiloba.

Toxicodendron diversilobum (noun)	western poison oak (noun)
poisonous shrub of the Pacific coast of North America that causes a rash on contact	poisonous shrub of the Pacific coast of North America that causes a rash on contact