sweet wattle vs mimosa bush

sweet wattle and mimosa bush both are nouns.

Word	Noun	Adjective	Verb	Adverb
sweet wattle	Yes	No	No	No
mimosa bush	Yes	No	No	No

As nouns, sweet wattle and mimosa bush are synonyms defined as:

sweet wattle and mimosa bush: tropical American thorny shrub or small tree; fragrant yellow flowers used in making perfumery

Other synonyms of sweet wattle include Acacia farnesiana, cassie, flame tree, huisache, scented wattle, sweet acacia.

sweet wattle (noun)	mimosa bush (noun)
tropical American thorny shrub or small tree; fragrant yellow flowers used in making perfumery	tropical American thorny shrub or small tree; fragrant yellow flowers used in making perfumery