burst out vs erupt

burst out and erupt both are verbs.

Word	Noun	Adjective	Verb	Adverb
burst out	No	No	Yes	No
erupt	No	No	Yes	No

As verbs, burst out and erupt are synonyms defined as:

Other synonyms of burst out include break open, flare, flare up, irrupt.

burst out (verb)	erupt (verb)
erupt or intensify suddenly	become active and spew forth lava and rocks
give sudden release to an expression	start abruptly
appear suddenly or unexpectedly; happen unexpectedly	erupt or intensify suddenly
	become raw or open
	break out
	appear on the skin
	force out or release suddenly and often violently something pent up
	start to burn or burst into flames