hit on vs mack

hit on

verb
  • To flirt with; to approach and speak to (someone), seeking romance, love, sex, etc. 

  • To discover, pinpoint; to think up; to realize. 

mack

verb
  • To seduce or flirt with. 

  • To act as pimp; to pander. 

noun
  • An element of a ship's superstructure which places the function of a ship's mast on its exhaust stack, adding the skeletal supporting structure to the smokestack to support the mast's complement of functions. 

  • A raincoat or mackintosh. 

  • An individual skilled in the art of seduction using verbal skills. 

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