orchard grass vs cocksfoot

orchard grass and cocksfoot both are nouns.

Word	Noun	Adjective	Verb	Adverb
orchard grass	Yes	No	No	No
cocksfoot	Yes	No	No	No

As nouns, orchard grass and cocksfoot are synonyms defined as:

orchard grass and cocksfoot: widely grown stout Old World hay and pasture grass

Other synonyms of orchard grass include cockspur, Dactylis glomerata.

orchard grass (noun)	cocksfoot (noun)
widely grown stout Old World hay and pasture grass	widely grown stout Old World hay and pasture grass