bush willow vs Combretum erythrophyllum

bush willow and Combretum erythrophyllum both are nouns.

Word	Noun	Adjective	Verb	Adverb
bush willow	Yes	No	No	No
Combretum erythrophyllum	Yes	No	No	No

As nouns, bush willow and Combretum erythrophyllum are synonyms defined as:

bush willow and Combretum erythrophyllum: small South African tree having creamy yellow fragrant flowers usually growing on stream banks

bush willow (noun)	Combretum erythrophyllum (noun)
small deciduous tree of the Transvaal having spikes of yellow flowers	small South African tree having creamy yellow fragrant flowers usually growing on stream banks
small South African tree having creamy yellow fragrant flowers usually growing on stream banks