Bouviers des Flandres vs Bouvier des Flandres

Bouviers des Flandres and Bouvier des Flandres both are nouns.

Word	Noun	Adjective	Verb	Adverb
Bouviers des Flandres	Yes	No	No	No
Bouvier des Flandres	Yes	No	No	No

As nouns, Bouviers des Flandres and Bouvier des Flandres are synonyms defined as:

Bouviers des Flandres and Bouvier des Flandres: rough-coated breed used originally in Belgium for herding and guarding cattle

Bouviers des Flandres (noun)	Bouvier des Flandres (noun)
rough-coated breed used originally in Belgium for herding and guarding cattle	rough-coated breed used originally in Belgium for herding and guarding cattle