Synonyms for Upheaval (same or very similar meaning)
WordNet sense 1 (a state of violent disturbance and disorder (as in politics or social conditions generally)):
turbulence, Sturm und Drang
WordNet sense 2 (a violent disturbance):
convulsion, turmoil
WordNet sense 3 ((geology) a rise of land to a higher elevation (as in the process of mountain building)):
uplift, upthrust, upthrow
WordNet sense 4 (disturbance usually in protest):
agitation, excitement, hullabaloo
From the ODE community, based on WordNet
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