race vs throttle

race

verb
  • To run rapidly when not engaged to a transmission. 

  • To move or drive at high speed; to hurry or speed. 

  • To compete against in a race (contest). 

  • To take part in a race (in the sense of a contest). 

  • To assign a race to; to perceive as having a (usually specified) race. 

noun
  • Subspecies. 

  • A race condition. 

  • A breed or strain of domesticated animal. 

  • A progressive movement toward a goal. 

  • Competitive action of any kind, especially when prolonged; hence, career; course of life. 

  • A population geographically separated from others of its species that develops significantly different characteristics; a mating group. 

  • A fast-moving current of water, such as that which powers a mill wheel. 

  • A water channel, esp. one built to lead water to or from a point where it is utilised. 

  • An infraspecific rank, a pathotype, pathovar, etc. 

  • A large group of people distinguished from others on the basis of common physical characteristics, such as skin color or hair type. 

  • A contest between people, animals, vehicles, etc. where the goal is to be the first to reach some objective. Example: Several horses run in a horse race, and the first one to reach the finishing post wins 

  • A large group of sentient beings distinguished from others on the basis of a common heritage (compare species, subspecies). 

  • The bushings of a rolling element bearing which contacts the rolling elements. 

  • A rhizome or root, especially of ginger. 

  • A large group of people distinguished from others on the basis of a common heritage (compare ethnic group). See Wikipedia's article on historical definitions of race. 

  • A group or category distinguished from others on the basis of shared characteristics or qualities, for example social qualities. 

  • Swift progress; rapid motion; an instance of moving or driving at high speed. 

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 race and throttle occurred in a corpus of books? (source: Google Ngram Viewer )