What is the meaning of disturbance?

noun

• Activity that is a malfunction, intrusion, or interruption.
  • usage: "the term `distress' connotes some degree of perturbation and emotional upset"; "he looked around for the source of the disturbance"; "there was a disturbance of neural function"
  • synonyms: perturbation
• An unhappy and worried mental state.
  • usage: "there was too much anger and disturbance"; "she didn't realize the upset she caused me"
  • synonyms: perturbation, upset
• A disorderly outburst or tumult.
  • usage: "they were amazed by the furious disturbance they had caused"
  • synonyms: disruption, commotion, flutter, hurly burly, to-do, hoo-ha, hoo-hah, kerfuffle
• A noisy fight.
  • synonyms: affray, fray, ruffle
• The act of disturbing something or someone; setting something in motion.
• Psychiatry) a psychological disorder of thought or emotion; a more neutral term than mental illness.
  • synonyms: mental disorder, mental disturbance, psychological disorder, folie
• Electrical or acoustic activity that can disturb communication.
  • synonyms: noise, interference