Festuca elatior vs fescue grass

Festuca elatior and fescue grass both are nouns.

Word	Noun	Adjective	Verb	Adverb
Festuca elatior	Yes	No	No	No
fescue grass	Yes	No	No	No

As nouns, Festuca elatior and fescue grass are synonyms defined as:

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

Other synonyms of Festuca elatior include fescue, meadow fescue.

Festuca elatior (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