What is the meaning of disorder?

noun

• A physical condition in which there is a disturbance of normal functioning.
  • usage: "the doctor prescribed some medicine for the disorder"; "everyone gets stomach upsets from time to time"
  • synonyms: upset
• A condition in which things are not in their expected places.
  • usage: "the files are in complete disorder"
  • synonyms: disorderliness
• A disturbance of the peace or of public order.

verb

• Disturb in mind or make uneasy or cause to be worried or alarmed.
  • usage: "She was rather perturbed by the news that her father was seriously ill"
  • synonyms: perturb, unhinge, disquiet, trouble, cark, distract
• Bring disorder to.
  • synonyms: disarray