arson vs burning

arson and burning both are nouns.

Word	Noun	Adjective	Verb	Adverb
arson	Yes	No	No	No
burning	Yes	Yes	No	No

As nouns, burning is a hypernym of arson; that is, burning is a word with a broader meaning than arson:

Other hypernyms of arson include combustion.

arson (noun)	burning (noun)
malicious burning to destroy property	the act of burning something
	execution by electricity
	execution by fire
	a form of torture in which cigarettes or cigars or other hot implements are used to burn the victim's skin
	a process in which a substance reacts with oxygen to give heat and light
	pain that feels hot as if it were on fire

arson (adjective)	burning (adjective)
	of immediate import