[{"Bold_text": "noun", "List Items": ["harsh or unpleasant discordance of sound; dissonance:After living in the country, it's difficult for me to adjust to the cacophony produced by city traffic.", "a discordant and meaningless mixture of sounds:The sound effects included a cacophony of hoots, cackles, and wails.", "Music.frequent use of harsh, discordant notes or chords that seem to be patternless and without connection to each other."]}]