Eucalyptus rostrata vs river red gum

Eucalyptus rostrata and river red gum both are nouns.

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

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

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

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

Eucalyptus rostrata (noun)	river red gum (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