green gram vs edible bean

green gram and edible bean both are nouns.

Word	Noun	Adjective	Verb	Adverb
green gram	Yes	No	No	No
edible bean	Yes	No	No	No

As nouns, edible bean is a hypernym of green gram; that is, edible bean is a word with a broader meaning than green gram:

green gram: seed of the mung bean plant used for food
green gram: food from the seed of the mung bean plant
edible bean: any of various edible seeds of plants of the family Leguminosae used for food

Other hypernyms of green gram include bean.

green gram (noun)	edible bean (noun)
seed of the mung bean plant used for food; food from the seed of the mung bean plant	any of various edible seeds of plants of the family Leguminosae used for food
seed of the mung bean plant; used for food; seed of the mung bean plant