kickback vs rebate

kickback

noun
  • A covert, often illegal, payment in return for a favor consisting of providing an opportunity of chargeable transaction; a kind of bribe. 

  • A backward kick, a retrograde movement of an extremity. 

  • recoil; a sudden backward motion, usually in the direction of the operator. 

  • An accident wherein the upper tip of the bar of a running chainsaw contacts a relatively immovable object, forcing the bar upwards and pressing the running chain more firmly against the object, causing the saw to be hurled upwards and backwards into the operator's face. 

  • A dangerous buildup of gas pressure at the wellhead. 

  • In contract bridge, an ace asking convention initiated by the first step above four of the agreed trump suit. 

  • An accident where an object being cut by a rotating blade or disk, such as a circular saw, is caught by the blade and thrown outward. 

  • The board separating one bowling lane from another at the pit end. 

  • A feature that saves the ball from draining and propels it back into play. 

  • A relaxed party. 

rebate

noun
  • A deduction from an amount that is paid; an abatement. 

  • An iron tool sharpened something like a chisel, and used for dressing and polishing wood. 

  • A kind of hard freestone used in making pavements. 

  • The return of part of an amount already paid. 

  • The edge of a roll of film, from which no image can be developed. 

  • A piece of wood hafted into a long stick, and serving to beat out mortar. 

  • A rectangular groove made to hold two pieces (of wood etc) together; a rabbet. 

verb
  • To deduct or return an amount from a bill or payment 

  • To beat to obtuseness; to deprive of keenness; to blunt; to turn back the point of, as a lance used for exercise. 

  • To cut a rebate (or rabbet) in something 

  • To abate; to withdraw. 

  • Of a falcon: to return to the hand after bating; see bate². 

  • To diminish or lessen something 

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