Peace is a state of harmony in the absence of hostility and violence. In a societal sense, peace is commonly used to mean a lack of conflict (such as war) and freedom from fear of violence between individuals or groups. . "Psychological peace" (such as peaceful thinking and emotions) is less well-defined, yet perhaps a necessary precursor to establishing "behavioural peace". Peaceful behaviour sometimes results from a "peaceful inner disposition".
https://en.wikipedia.org/wiki/Peace