upheaval vs violence

upheaval and violence both are nouns.

Word	Noun	Adjective	Verb	Adverb
upheaval	Yes	No	No	No
violence	Yes	No	No	No

As nouns, violence is a hyponym of upheaval; that is, violence is a word with a more specific, narrower meaning than upheaval:

upheaval: a state of violent disturbance and disorder (as in politics or social conditions generally)
violence: a turbulent state resulting in injuries and destruction etc.

Other hyponyms of upheaval include agitation, ferment, fermentation, tempestuousness, unrest, roller coaster.

upheaval (noun)	violence (noun)
disturbance usually in protest	an act of aggression (as one against a person who resists)
(geology) a rise of land to a higher elevation (as in the process of mountain building)	the property of being wild or turbulent
a state of violent disturbance and disorder (as in politics or social conditions generally)	a turbulent state resulting in injuries and destruction etc.
a violent disturbance