graylag goose vs Anser anser

graylag goose and Anser anser both are nouns.

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

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

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

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

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