catch fire vs blow out

catch fire and blow out both are verbs.

Word	Noun	Adjective	Verb	Adverb
catch fire	No	No	Yes	No
blow out	No	No	Yes	No

As verbs, blow out is a hyponym of catch fire; that is, blow out is a word with a more specific, narrower meaning than catch fire:

Other hyponyms of catch fire include catch, light up.

catch fire (verb)	blow out (verb)
start to burn or burst into flames	melt, break, or become otherwise unusable
	put out, as of fires, flames, or lights
	erupt in an uncontrolled manner