hyperkinesis vs tic

hyperkinesis

noun
  • Abnormally increased and sometimes uncontrollable activity or muscular movements. 

  • A condition especially of childhood characterized by hyperactivity. 

tic

noun
  • A sudden, nonrhythmic motor movement or vocalization. 

  • ticket 

  • Something that is done or produced habitually or characteristically. 

verb
  • To exhibit a tic; to undergo a sudden, semi-voluntary muscle movement. 

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