meal vs Indian meal

meal and Indian meal both are nouns.

Word	Noun	Adjective	Verb	Adverb
meal	Yes	No	No	No
Indian meal	Yes	No	No	No

As nouns, Indian meal is a hyponym of meal; that is, Indian meal is a word with a more specific, narrower meaning than meal:

meal: coarsely ground foodstuff; especially seeds of various cereal grasses or pulse
Indian meal: coarsely ground corn

meal (noun)	Indian meal (noun)
the food served and eaten at one time	coarsely ground corn
coarsely ground foodstuff; especially seeds of various cereal grasses or pulse
any of the occasions for eating food that occur by custom or habit at more or less fixed times