ha-ha vs he

ha-ha

intj
  • An approximation of the sound of laughter. 

noun
  • A laugh. 

  • Something funny; a joke. 

  • A ditch with one vertical side, acting as a sunken fence, designed to block the entry of animals into lawns and parks without breaking sightlines. 

verb
  • To laugh. 

he

intj
  • An expression of laughter. 

det
  • Synonym of his 

pron
  • A genderless object regarded as masculine, such as certain stars or planets (e.g. Sun, Mercury, Mars, Jupiter) or certain ships. 

  • A male person or animal already known or implied. 

  • they; he or she (a person whose gender is unknown or irrelevant.) 

  • it; an animal whose gender is unknown. 

noun
  • A male. 

  • The name of the first letter of the Old South Arabian abjad. 

  • The name of the fifth letter of many Semitic alphabets (Phoenician, Aramaic, Hebrew, Syriac, Arabic and others). 

  • The game of tag, or it, in which the player attempting to catch the others is called "he". 

  • The player who chases and attempts to catch the others in this game. 

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