Erithacus rubecola vs robin

Erithacus rubecola and robin both are nouns.

Word	Noun	Adjective	Verb	Adverb
Erithacus rubecola	Yes	No	No	No
robin	Yes	No	No	No

As nouns, Erithacus rubecola and robin are synonyms defined as:

Erithacus rubecola and robin: small Old World songbird with a reddish breast

Other synonyms of Erithacus rubecola include Old World robin, redbreast, robin redbreast.

Erithacus rubecola (noun)	robin (noun)
small Old World songbird with a reddish breast	large American thrush having a rust-red breast and abdomen
	small Old World songbird with a reddish breast