fescue vs Festuca elatior

fescue and Festuca elatior both are nouns.

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

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

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

Other synonyms of fescue include fescue grass, meadow fescue.

fescue (noun)	Festuca elatior (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