grama grass vs grama

grama grass and grama both are nouns.

Word	Noun	Adjective	Verb	Adverb
grama grass	Yes	No	No	No
grama	Yes	No	No	No

As nouns, grama grass and grama are synonyms defined as:

grama grass and grama: pasture grass of plains of South America and western North America

Other synonyms of grama grass include gramma, gramma grass.

grama grass (noun)	grama (noun)
pasture grass of plains of South America and western North America	pasture grass of plains of South America and western North America