pedal vs throttle

pedal

noun
  • A lever operated by one's foot that is used to control or power a machine or mechanism, such as a bicycle or piano 

  • The ranks of pipes played from the pedal-board of an organ. 

  • an orthopedic structure or a footlike part. 

  • An effects unit, especially one designed to be activated by being stepped on. 

  • A stirrup. 

adj
  • Of or relating to the foot. 

verb
  • To operate a pedal attached to a wheel in a continuous circular motion. 

  • To operate a bicycle. 

throttle

noun
  • The lever or pedal that controls this valve. 

  • A valve that regulates the supply of fuel-air mixture to an internal combustion engine and thus controls its speed; a similar valve that controls the air supply to an engine. 

verb
  • To utter with breaks and interruption, in the manner of a person half suffocated. 

  • To have the throat obstructed so as to be in danger of suffocation; to choke; to suffocate. 

  • To control or adjust the speed of (an engine). 

  • To breathe hard, as when nearly suffocated. 

  • To cut back on the speed of (an engine, person, organization, network connection, etc.). 

  • To strangle or choke someone. 

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