dunlin vs Erolia alpina

dunlin and Erolia alpina both are nouns.

Word	Noun	Adjective	Verb	Adverb
dunlin	Yes	No	No	No
Erolia alpina	Yes	No	No	No

As nouns, dunlin and Erolia alpina are synonyms defined as:

dunlin and Erolia alpina: small common sandpiper that breeds in northern or Arctic regions and winters in southern United States or Mediterranean regions

Other synonyms of dunlin include red-backed sandpiper.

dunlin (noun)	Erolia alpina (noun)
small common sandpiper that breeds in northern or Arctic regions and winters in southern United States or Mediterranean regions	small common sandpiper that breeds in northern or Arctic regions and winters in southern United States or Mediterranean regions