Turdus merula vs merle

Turdus merula and merle both are nouns.

Word	Noun	Adjective	Verb	Adverb
Turdus merula	Yes	No	No	No
merle	Yes	No	No	No

As nouns, Turdus merula and merle are synonyms defined as:

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

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