habit vs quirk

habit

verb
  • To clothe. 

noun
  • A long piece of clothing worn by monks and nuns. 

  • An action performed on a regular basis. 

  • An action performed repeatedly and automatically, usually without awareness. 

  • A piece of clothing worn for a specific activity; a uniform. 

  • An addiction. 

quirk

verb
  • To furnish with a quirk or channel. 

  • To (cause to) move with a wry jerk. 

noun
  • An acute angle dividing a molding; a groove that runs lengthwise between the upper part of a moulding and a soffit. 

  • An idiosyncrasy; a slight glitch, mannerism; something unusual about the manner or style of something or someone. 

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