burping vs eructation

burping and eructation both are nouns.

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

As nouns, burping and eructation are synonyms defined as:

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

Other synonyms of burping include belch, belching, burp.

burping (noun)	eructation (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
	(of volcanoes) pouring out fumes or lava (or a deposit so formed)