greylag vs graylag goose

greylag and graylag goose both are nouns.

Word	Noun	Adjective	Verb	Adverb
greylag	Yes	No	No	No
graylag goose	Yes	No	No	No

As nouns, greylag and graylag goose are synonyms defined as:

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

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

greylag (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