scented wattle vs acacia

scented wattle and acacia both are nouns.

Word	Noun	Adjective	Verb	Adverb
scented wattle	Yes	No	No	No
acacia	Yes	No	No	No

As nouns, acacia is a hypernym of scented wattle; that is, acacia is a word with a broader meaning than scented wattle:

scented wattle: tropical American thorny shrub or small tree; fragrant yellow flowers used in making perfumery
acacia: any of various spiny trees or shrubs of the genus Acacia

scented wattle (noun)	acacia (noun)
tropical American thorny shrub or small tree; fragrant yellow flowers used in making perfumery	any of various spiny trees or shrubs of the genus Acacia