Cassia grandis vs pink shower tree

Cassia grandis and pink shower tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
Cassia grandis	Yes	No	No	No
pink shower tree	Yes	No	No	No

As nouns, Cassia grandis and pink shower tree are synonyms defined as:

Cassia grandis and pink shower tree: tropical American semi-evergreen tree having erect racemes of pink or rose-colored flowers; used as an ornamental

Other synonyms of Cassia grandis include horse cassia, pink shower.

Cassia grandis (noun)	pink shower tree (noun)
tropical American semi-evergreen tree having erect racemes of pink or rose-colored flowers; used as an ornamental	tropical American semi-evergreen tree having erect racemes of pink or rose-colored flowers; used as an ornamental