European blackbird vs blackbird

European blackbird and blackbird both are nouns.

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

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

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

European blackbird (noun)	blackbird (noun)
common black European thrush	any bird of the family Icteridae whose male is black or predominantly black
	common black European thrush