Buchloe dactyloides vs buffalo grass

Buchloe dactyloides and buffalo grass both are nouns.

Word	Noun	Adjective	Verb	Adverb
Buchloe dactyloides	Yes	No	No	No
buffalo grass	Yes	No	No	No

As nouns, Buchloe dactyloides and buffalo grass are synonyms defined as:

Buchloe dactyloides and buffalo grass: short grass growing on dry plains of central United States (where buffalo roam)

Buchloe dactyloides (noun)	buffalo grass (noun)
short grass growing on dry plains of central United States (where buffalo roam)	short grass growing on dry plains of central United States (where buffalo roam)
	low mat-forming grass of southern United States and tropical America; grown as a lawn grass