chittimwood vs Rhamnus purshianus

chittimwood and Rhamnus purshianus both are nouns.

Word	Noun	Adjective	Verb	Adverb
chittimwood	Yes	No	No	No
Rhamnus purshianus	Yes	No	No	No

As nouns, chittimwood and Rhamnus purshianus are synonyms defined as:

chittimwood and Rhamnus purshianus: shrubby tree of the Pacific coast of the United States; yields cascara sagrada

Other synonyms of chittimwood include bearberry, bearwood, cascara buckthorn, chittamwood.

chittimwood (noun)	Rhamnus purshianus (noun)
deciduous tree of southeastern United States and Mexico	shrubby tree of the Pacific coast of the United States; yields cascara sagrada
shrubby tree of the Pacific coast of the United States; yields cascara sagrada