European blackbird vs Turdus merula

European blackbird and Turdus merula both are nouns.

Word	Noun	Adjective	Verb	Adverb
European blackbird	Yes	No	No	No
Turdus merula	Yes	No	No	No

As nouns, European blackbird and Turdus merula are synonyms defined as:

Other synonyms of European blackbird include blackbird, merl, merle, ousel, ouzel.

European blackbird (noun)	Turdus merula (noun)
common black European thrush	common black European thrush