burping vs belching

burping and belching both are nouns.

Word	Noun	Adjective	Verb	Adverb
burping	Yes	No	No	No
belching	Yes	No	No	No

As nouns, burping and belching are synonyms defined as:

burping and belching: a reflex that expels gas noisily from the stomach through the mouth

Other synonyms of burping include belch, burp, eructation.

burping (noun)	belching (noun)
a reflex that expels gas noisily from the stomach through the mouth	a reflex that expels gas noisily from the stomach through the mouth
	the forceful expulsion of something from inside