river gum vs Eucalyptus camaldulensis

river gum and Eucalyptus camaldulensis both are nouns.

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

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

river 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 gum include Eucalyptus rostrata, river red gum.

river 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