"upheavals" in the noun sense
1. turbulence, upheaval, Sturm und Drang
a state of violent disturbance and disorder (as in politics or social conditions generally
"the industrial revolution was a period of great turbulence"
2. convulsion, turmoil, upheaval
a violent disturbance
"the convulsions of the stock market"
3. upheaval, uplift, upthrow, upthrust
geology) a rise of land to a higher elevation (as in the process of mountain building)
4. agitation, excitement, turmoil, upheaval, hullabaloo
disturbance usually in protest
Source: WordNet® (An amazing lexical database of English)
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