noisy vs unheard

noisy

adj
  • Unpleasant-looking and causing unwanted attention 

  • Making a noise, especially a loud unpleasant sound 

  • Full of noise. 

unheard

adj
  • Not heard. 

  • Not listened to. 

  • Not known to fame; not illustrious or celebrated; obscure. 

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