excitation vs numbness

excitation

noun
  • The activity produced in an organ, tissue, or part, such as a nerve cell, as a result of stimulation 

  • The act of exciting or putting in motion; the act of rousing up or awakening. 

  • The act of producing excitement (stimulation); also, the excitement produced. 

  • A transition of a nucleus, atom or molecule to an excited state by the absorption of a quantum of energy; the opposite of relaxation 

numbness

noun
  • Absent or reduced sensitivity to cutaneous stimulation. 

  • Inability or reduced ability to experience emotion. 

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