combustion vs uproar

combustion and uproar both are nouns.

Word	Noun	Adjective	Verb	Adverb
combustion	Yes	No	No	No
uproar	Yes	No	No	No

As nouns, uproar is a hypernym of combustion; that is, uproar is a word with a broader meaning than combustion:

Other hypernyms of combustion include garboil, tumult, tumultuousness.

combustion (noun)	uproar (noun)
the act of burning something	loud confused noise from many sources
a process in which a substance reacts with oxygen to give heat and light	a state of commotion and noise and confusion
a state of violent disturbance and excitement