king-hit vs swat

king-hit

noun
  • A powerful punch; a knockout blow. 

swat

noun
  • A hard stroke, hit or blow, e.g., as part of a spanking. 

  • Alternate spelling of swot: vigorous study at an educational institution. 

verb
  • To beat off, as insects; to bat, strike, or hit. 

  • To illegitimately provoke a SWAT assault upon (someone). 

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