black wattle vs Acacia auriculiformis

black wattle and Acacia auriculiformis both are nouns.

Word	Noun	Adjective	Verb	Adverb
black wattle	Yes	No	No	No
Acacia auriculiformis	Yes	No	No	No

As nouns, black wattle and Acacia auriculiformis are synonyms defined as:

black wattle and Acacia auriculiformis: Australian tree that yields tanning materials

black wattle (noun)	Acacia auriculiformis (noun)
Australian tree that yields tanning materials	Australian tree that yields tanning materials