OVERVIEW FROM WIKIPEDIA:
Corruption is a form of dishonesty or a criminal offense which is undertaken by a person or an organization which is entrusted in a position of authority, in order to acquire illicit benefits or abuse power for one's personal gain. Corruption may involve many activities which include bribery, influence peddling and the embezzlement and it may also involve practices which are legal in many countries. Political corruption occurs when an office-holder or other governmental employee acts with an official capacity for personal gain. Corruption is most common in kleptocracies, oligarchies, narco-states, and mafia states.
Corruption and crime are endemic sociological occurrences which appear with regular frequency in virtually all countries on a global scale in varying degrees and proportions. Each individual nation allocates domestic resources for the control and regulation of corruption and the deterrence of crime. Strategies which are undertaken in order to counter corruption are often summarized under the umbrella term anti-corruption. Additionally, global initiatives like the United Nations Sustainable Development Goal 16also have a targeted goal which is supposed to substantially reduce corruption in all of its forms.
A tyrant (from Ancient Greek τύραννος (túrannos) 'absolute ruler'), in the modern English usage of the word, is an absolute ruler who is unrestrained by law, or one who has usurped a legitimate ruler's sovereignty. Often portrayed as cruel, tyrants may defend their positions by resorting to repressive means. The original Greek term meant an absolute sovereign who came to power without constitutional right, yet the word had a neutral connotation during the Archaic and early Classical periods. However, Greek philosopher Plato saw tyrannos as a negative word, and on account of the decisive influence of philosophy on politics, its negative connotations only increased, continuing into the Hellenistic period.
The philosophers Plato and Aristotle defined a tyrant as a person who rules without law, using extreme and cruel methods against both his own people and others. The Encyclopédie defined the term as a usurper of sovereign power who makes "his subjects the victims of his passions and unjust desires, which he substitutes for laws". In the late fifth and fourth centuries BC, a new kind of tyrant, one who had the support of the military, arose – specifically in Sicily.
One can apply accusations of tyranny to a variety of types of government: