Anser anser vs graylag goose

Anser anser and graylag goose both are nouns.

Word	Noun	Adjective	Verb	Adverb
Anser anser	Yes	No	No	No
graylag goose	Yes	No	No	No

As nouns, Anser anser and graylag goose are synonyms defined as:

Anser anser and graylag goose: common grey wild goose of Europe; ancestor of many domestic breeds

Other synonyms of Anser anser include graylag, greylag, greylag goose.

Anser anser (noun)	graylag goose (noun)
common grey wild goose of Europe; ancestor of many domestic breeds	common grey wild goose of Europe; ancestor of many domestic breeds