ha vs haha

ha

intj
  • A representation of laughter. 

  • An exclamation of triumph or discovery. 

  • Said when making a vigorous attack. 

haha

intj
  • An onomatopoeic representation of laughter. 

noun
  • Type of boundary to a garden, pleasure-ground, or park, designed not to interrupt the view and to be invisible until closely approached. 

  • A large leafy Hawaiian plant, Gunnera petaloidea. 

verb
  • To laugh. 

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