gram calorie vs calorie

gram calorie and calorie both are nouns.

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

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

gram calorie and 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 small calorie.

gram calorie (noun)	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