boon vs penalty

boon

adj
  • gay; merry; jovial; convivial. 

noun
  • The woody portion of flax, separated from the fiber as refuse matter by retting, braking, and scutching. 

  • A good thing; a blessing or benefit; a thing to be thankful for. 

  • An unpaid service due by a tenant to his lord. 

penalty

noun
  • A punishment for an infraction of the rules, often in the form of being removed from play for a specified amount of time. 

  • A legal sentence. 

  • A punishment for violating rules of procedure. 

  • A direct free kick from the penalty spot, taken after a defensive foul in the penalty box; a penalty kick. 

  • A payment forfeited for an early withdrawal from an account or an investment. 

  • A disadvantageous consequence of a previous event. 

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