Definitions of peace:

• noun:   a treaty to cease hostilities

  Example: "Peace came on November 11th"

• noun:   the absence of mental stress or anxiety
• noun:   harmonious relations; freedom from disputes

  Example: "The roommates lived in peace together"

• noun:   the state prevailing during the absence of war
• noun:   the general security of public places

  Example: "He was arrested for disturbing the peace"

• name:  A surname (rare: 1 in 33333 families; popularity rank in the U.S.: #3821)