eructation vs burping

eructation and burping both are nouns.

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

As nouns, eructation and burping are synonyms defined as:

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

Other synonyms of eructation include belch, belching, burp.

eructation (noun)	burping (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)