cacophonous vs noisy

cacophonous

adj
  • Containing, consisting of, or producing harsh, unpleasant or discordant sounds. 

noisy

adj
  • Making a noise, especially a loud unpleasant sound 

  • Unpleasant-looking and causing unwanted attention 

  • Full of noise. 

How often have the words cacophonous and noisy occurred in a corpus of books? (source: Google Ngram Viewer )