bubble vs burp

bubble and burp both are nouns.

Word	Noun	Adjective	Verb	Adverb
bubble	Yes	No	Yes	No
burp	Yes	No	Yes	No

As verbs, bubble and burp are synonyms defined as:

Other synonyms of bubble include belch, eruct.

bubble (noun)	burp (noun)
a dome-shaped covering made of transparent glass or plastic	a reflex that expels gas noisily from the stomach through the mouth
an impracticable and illusory idea
a speculative scheme that depends on unstable factors that the planner cannot control
a hollow globule of gas (e.g., air or carbon dioxide)

bubble (verb)	burp (verb)
expel gas from the stomach	expel gas from the stomach
form, produce, or emit bubbles
cause to form bubbles
rise in bubbles or as if in bubbles
flow in an irregular current with a bubbling noise