kweng vs sprog

kweng

verb
  • To shoot, to kill by gunfire. 

noun
  • A physically attractive woman. 

sprog

verb
  • To ejaculate, to come. 

  • To produce children. 

noun
  • A child. 

  • A new recruit. 

  • A deflection-limiting safety device used in high performance hang gliders. 

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