gramma vs grama

gramma and grama both are nouns.

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

As nouns, gramma and grama are synonyms defined as:

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

Other synonyms of gramma include grama grass, gramma grass.

gramma (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