eastern poison oak vs Rhus toxicodenedron

eastern poison oak and Rhus toxicodenedron both are nouns.

Word	Noun	Adjective	Verb	Adverb
eastern poison oak	Yes	No	No	No
Rhus toxicodenedron	Yes	No	No	No

As nouns, eastern poison oak and Rhus toxicodenedron are synonyms defined as:

eastern poison oak and Rhus toxicodenedron: poisonous shrub of southeastern United States causing a rash on contact

Other synonyms of eastern poison oak include Rhus quercifolia, Toxicodendron quercifolium.

eastern poison oak (noun)	Rhus toxicodenedron (noun)
poisonous shrub of southeastern United States causing a rash on contact	poisonous shrub of southeastern United States causing a rash on contact