throttle vs vent

throttle

verb
  • To breathe hard, as when nearly suffocated. 

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

  • 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. 

vent

verb
  • To snuff; to breathe or puff out; to snort. 

  • To allow gases to escape. 

  • To determine the sex of (a chick) by opening up the anal vent or cloaca. 

  • To ventilate; to use a ventilator; to use ventilation. 

  • To express a strong emotion. 

  • To sell; to vend. 

  • To allow to escape through a vent. 

noun
  • An opening in a volcano from which lava or gas flows. 

  • Opportunity of escape or passage from confinement or privacy; outlet. 

  • A small aperture. 

  • The opening at the breech of a firearm, through which fire is communicated to the powder of the charge. 

  • Ventriloquism. 

  • A slit in the seam of a garment. 

  • Emission; escape; passage to notice or expression; publication; utterance. 

  • An opening through which gases, especially air, can pass. 

  • The excretory opening of lower orders of vertebrates. 

  • A rant; a long session of expressing verbal frustration. 

  • In steam boilers, a sectional area of the passage for gases divided by the length of the same passage in feet. 

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