meadow fescue vs fescue grass

meadow fescue and fescue grass both are nouns.

Word	Noun	Adjective	Verb	Adverb
meadow fescue	Yes	No	No	No
fescue grass	Yes	No	No	No

As nouns, meadow fescue and fescue grass are synonyms defined as:

meadow fescue and fescue grass: grass with wide flat leaves cultivated in Europe and America for permanent pasture and hay and for lawns

Other synonyms of meadow fescue include fescue, Festuca elatior.

meadow fescue (noun)	fescue grass (noun)
grass with wide flat leaves cultivated in Europe and America for permanent pasture and hay and for lawns	grass with wide flat leaves cultivated in Europe and America for permanent pasture and hay and for lawns