Erolia alpina vs red-backed sandpiper

Erolia alpina and red-backed sandpiper both are nouns.

Word	Noun	Adjective	Verb	Adverb
Erolia alpina	Yes	No	No	No
red-backed sandpiper	Yes	No	No	No

As nouns, Erolia alpina and red-backed sandpiper are synonyms defined as:

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

Other synonyms of Erolia alpina include dunlin.

Erolia alpina (noun)	red-backed sandpiper (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