rocker vs throttle

rocker

noun
  • A kind of electrical switch with a spring-loaded actuator. 

  • A rocking chair. 

  • A rock music song. 

  • A curved piece of wood attached to the bottom of a rocking chair or cradle that enables it to rock back and forth. 

  • A skate with a curved blade, somewhat resembling in shape the rocker of a cradle. 

  • The breve below as in ḫ. 

  • Someone passionate about rock music. 

  • One who rocks something. 

  • A tool with small teeth that roughens a metal plate to produce tonality in mezzotints. 

  • A curved line accompanying the chevrons that denote rank, qualifying the rank with a grade. 

  • A member of a British subculture of the 1960s, opposed to the mods, who dressed in black leather and were interested in 1950s music. 

  • The lengthwise curvature of a surfboard. (More rocker is a more curved board.) 

  • A musician who plays rock music. 

  • A rock shaft. 

  • Any implement or machine working with a rocking motion, such as a trough mounted on rockers for separating gold dust from gravel, etc., by agitation in water. 

  • A rocking horse. 

  • A rocker board. 

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