hairdryer vs windshield wiper

hairdryer

noun
  • A small electrical appliance for drying hair, by generating a stream of hot air. 

windshield wiper

noun
  • a device used to clear rain and dirt from a windshield; normally a pivoting arm with a rubber blade 

  • An exercise where the back is parallel to the ground (lying on it or hanging via the arms from a pull-up bar) and the legs are perpendicular to the floor so that the lower torso with the legs is rotated to target the Musculus obliquus externus abdominis, the Musculus quadratus lumborum and the Musculus rectus abdominis. 

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