Anser anser vs graylag

Anser anser and graylag both are nouns.

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

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

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

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

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