blow out vs combust

blow out and combust both are verbs.

Word	Noun	Adjective	Verb	Adverb
blow out	No	No	Yes	No
combust	No	No	Yes	No

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

Other hypernyms of blow out include catch fire, conflagrate, erupt, ignite, take fire.

blow out (verb)	combust (verb)
melt, break, or become otherwise unusable	undergo combustion
put out, as of fires, flames, or lights	get very angry and fly into a rage
erupt in an uncontrolled manner	cause to become violent or angry
	start to burn or burst into flames
	cause to burn or combust