small calorie vs calorie

small calorie and calorie both are nouns.

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

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

small 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 small calorie include gram calorie.

small 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