buffalo grass vs Buchloe dactyloides

buffalo grass and Buchloe dactyloides both are nouns.

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

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

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

buffalo grass (noun)	Buchloe dactyloides (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