excitation vs worry

excitation

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

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

  • 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 

worry

noun
  • An instance or cause of such a feeling. 

  • A strong feeling of anxiety. 

  • A person who causes worry. 

verb
  • To harass; to irritate or distress. 

  • To touch repeatedly, to fiddle with. 

  • To be troubled; to give way to mental anxiety or doubt. 

  • To seize or shake by the throat, especially of a dog or wolf. 

  • Disturb the peace of mind of; afflict with mental agitation or distress. 

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