"Belch" vs. "burp": same sound, different vibe

What is similar?

Both "belch" and "burp" refer to the act of expelling gas from the stomach through the mouth. They can be used as both nouns and verbs to describe this physiological action.

What is different?

"Belch" can be used both in literal and figurative contexts, such as in "The volcano belched smoke", whereas "burp" is typically used only in the literal sense. "Burp" is more commonly used in everyday language and is considered less formal than "belch".

Which one is more common?