'peace' originates from Old French 'pais', which comes from Latin 'pax', meaning 'peace, compact, agreement, treaty of peace, tranquility, absence of war'.

'pais' transformed into the Middle English word 'pece', and eventually became the modern English word 'peace'.

Initially, it meant 'a pact or agreement', but over time it evolved into its current meaning of 'tranquility or absence of war'.