combust vs rage

combust is not a noun while rage is a noun.

Word	Noun	Adjective	Verb	Adverb
combust	No	No	Yes	No
rage	Yes	No	Yes	No

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

combust (noun)	rage (noun)
	an interest followed with exaggerated zeal
	a feeling of intense anger
	a state of extreme anger
	violent state of the elements
	something that is desired intensely

combust (verb)	rage (verb)
undergo combustion	feel intense anger
get very angry and fly into a rage	be violent; as of fires and storms
cause to become violent or angry	behave violently, as if in state of a great anger
start to burn or burst into flames
cause to burn or combust