First of all, upheaval is one word, not two.
It means a violent disruption or change in something
explosion, eruption, outbreak, change
clamoroutbreakconvulsioncommotiondisorderdisasterflip-flopDisruption, tumult, disorder, commotion, turmoil...
Creole elites viewed it as a horrible example of social upheaval
The French Revolution
Some people think it mean good luck.
when political is in upheaval
To be confused, angry or excited.
Upheaval -a disturbance usually in protest.a state of violent disturbance and disorder.(geology) a rise of land to a higher elevation .
His personnel action has been an upheaval of his own vision
it is a great upheaval when students are found plagerizing sentences.
It is a great upheaval when students are found out plagiarising sentences.
The American Revolution was the upheaval of British colonial rule.
the wedding was in great upheaval due to the bride and groom's absence
The word "upheaval" is a noun. It refers to a sudden, violent change or disruption, typically causing confusion or instability.
The word upheaval is a noun, a singular, common, abstract noun. The noun upheaval is an abstract noun when used as a word for a sudden, violent change or disruption. The noun upheaval is a concrete noun when used as a word for an upward displacement of part of the earth's crust.
Synonyms for the noun confusion are disorientation, befuddlement, fluster, fuss, commotion, mix up, or upheaval.
The fault line is obviated by this great upheaval of the ground.