roll off vs spiel off

roll off

verb
  • To show reduced response at the upper or lower limits of a frequency range. 

  • To come from an assembly line. 

  • To spontaneously roll suddenly and rapidly to one side or the other upon entering a stall (due to one wing stalling slightly before the other does, combined with the reduced effectiveness of ailerons for roll control at high angles of attack). 

  • To come off (something) with a rolling motion. 

spiel off

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