river red gum vs Eucalyptus camaldulensis

river red gum and Eucalyptus camaldulensis both are nouns.

Word	Noun	Adjective	Verb	Adverb
river red gum	Yes	No	No	No
Eucalyptus camaldulensis	Yes	No	No	No

As nouns, river red gum and Eucalyptus camaldulensis are synonyms defined as:

river red gum and Eucalyptus camaldulensis: somewhat crooked red gum tree growing chiefly along rivers; has durable reddish lumber used in heavy construction

Other synonyms of river red gum include Eucalyptus rostrata, river gum.

river red gum (noun)	Eucalyptus camaldulensis (noun)
somewhat crooked red gum tree growing chiefly along rivers; has durable reddish lumber used in heavy construction	somewhat crooked red gum tree growing chiefly along rivers; has durable reddish lumber used in heavy construction