Bigamy comprises of two words 'Bi' and 'gamy' which means 'two' and 'marriage'. Altogether it can be defined as entering into a marital relationship while the first marriage still exists. In the present time bigamy is a punishable offence under IPC and under Hindu Law.
In simple words Murder can be defined as killing of a human being by another human being. Under IPC, the concept of murder is dealt in section 299 and 300 which state the definition of culpable homicide and murder respectively.
Cyber Defamation is when the injury to a person's reputation is done through the means of internet or web. The impact of Cyber Defamation is just as harmful as defamation.