burst out vs intensify

burst out and intensify both are verbs.

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

As verbs, intensify is a hypernym of burst out; that is, intensify is a word with a broader meaning than burst out:

Other hypernyms of burst out include deepen.

burst out (verb)	intensify (verb)
erupt or intensify suddenly	become more intense
give sudden release to an expression	make more intense, stronger, or more marked
appear suddenly or unexpectedly; happen unexpectedly	increase in extent or intensity
	make the chemically affected part of (a negative) denser or more opaque in order produce a stronger contrast between light and dark