palpitation vs thumping

palpitation

noun
  • An abnormal beating of the heart that may be perceived by the patient, a result of excitement, exertion, or illness. 

thumping

noun
  • A beating. 

  • A dull, heavy sound. 

  • A heavy defeat. 

adj
  • Exceptional in some degree. 

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