gram calorie vs small calorie

gram calorie and small calorie both are nouns.

Word	Noun	Adjective	Verb	Adverb
gram calorie	Yes	No	No	No
small calorie	Yes	No	No	No

As nouns, gram calorie and small calorie are synonyms defined as:

gram calorie and small calorie: unit of heat defined as the quantity of heat required to raise the temperature of 1 gram of water by 1 degree centigrade at atmospheric pressure

Other synonyms of gram calorie include calorie.

gram calorie (noun)	small calorie (noun)
unit of heat defined as the quantity of heat required to raise the temperature of 1 gram of water by 1 degree centigrade at atmospheric pressure	unit of heat defined as the quantity of heat required to raise the temperature of 1 gram of water by 1 degree centigrade at atmospheric pressure