chittamwood vs cascara buckthorn

chittamwood and cascara buckthorn both are nouns.

Word	Noun	Adjective	Verb	Adverb
chittamwood	Yes	No	No	No
cascara buckthorn	Yes	No	No	No

As nouns, chittamwood and cascara buckthorn are synonyms defined as:

chittamwood and cascara buckthorn: shrubby tree of the Pacific coast of the United States; yields cascara sagrada

Other synonyms of chittamwood include bearberry, bearwood, chittimwood, Rhamnus purshianus.

chittamwood (noun)	cascara buckthorn (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
shrubby tree of southern United States having large plumes of feathery flowers resembling puffs of smoke