disturbance vs whammy

disturbance

noun
  • The act of disturbing, being disturbed. 

  • A noisy commotion that causes a hubbub or interruption. 

  • Something that disturbs. 

  • An interruption of that which is normal or regular. 

  • A serious mental imbalance or illness. 

whammy

noun
  • an evil spell; a curse or hex 

  • the vibrato system of an electric guitar, or just its lever (whammy bar) 

  • a serious or devastating setback 

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