tachometer vs wallop

tachometer

noun
  • A device for measuring the revolutions per minute (RPMs) of a revolving shaft, as with the driveshaft of an automobile. 

  • A device for measuring or indicating velocity or speed, as of blood, a river, a machine, etc. 

wallop

noun
  • A quick rolling movement; a gallop. 

  • anything produced by a process that involves boiling; beer, tea, whitewash. 

  • A heavy blow, punch. 

  • A thrill, emotionally excited reaction. 

  • A person's ability to throw such punches. 

  • An emotional impact, psychological force. 

verb
  • To wrap up temporarily. 

  • To flounder, wallow. 

  • To boil with a continued bubbling or heaving and rolling, with noise. 

  • To strike heavily, thrash soundly. 

  • To move in a rolling, cumbersome manner; to waddle. 

  • To rush hastily. 

  • To trounce, beat by a wide margin. 

  • To eat or drink with gusto. 

  • To send a message to all operators on an Internet Relay Chat server. 

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