slow vs throttle

slow

verb
  • To make (something) run, move, etc. less quickly; to reduce the speed of. 

  • To keep from going quickly; to hinder the progress of. 

  • To become slow; to slacken in speed; to decelerate. 

adj
  • Behind in time; indicating a time earlier than the true time. 

  • Lacking spirit; deficient in liveliness or briskness. 

  • Not happening in a short time; spread over a comparatively long time. 

  • Of reduced intellectual capacity; not quick to comprehend. 

  • Not busy; lacking activity. 

  • Taking a long time to move or go a short distance, or to perform an action; not quick in motion; proceeding at a low speed. 

  • Not hasty; not tending to hurry; acting with deliberation or caution. 

adv
  • Slowly. 

noun
  • A slow song. 

  • Someone who is slow; a sluggard. 

throttle

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

  • 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 strangle or choke someone. 

noun
  • 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. 

  • The lever or pedal that controls this valve. 

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