keyhole vs slot

keyhole

noun
  • The hole in a lock where the key is inserted and turns. 

  • A mortise for a key or cotter. 

  • A gravitational keyhole. 

  • Any small opening resembling the hole for a key in shape or function. 

  • A hole or excavation in beams intended to be joined together, to receive the key that fastens them. 

  • A transient column of vapor or plasma formed when using high energy beams, such as lasers, for welding or cutting. 

  • The free-throw lane together with the circle surrounding the free-throw line; key. 

  • A circle cut out of a garment as a decorative effect, typically at the front or back neckline of a dress. 

  • A welding method in which a hole forms in the surface immediately ahead of the puddle in the direction of welding. The hole is filled as the weld progresses. 

verb
  • To strike a target after wobbling in flight so that the long axis of the bullet does not follow the line of flight, typically due to insufficient spin resulting from the rifling in the barrel. 

slot

noun
  • An implement for barring, bolting, locking or securing a door, box, gate, lid, window or the like. 

  • The inside of the "rim" or semicircular copy desk, occupied by the supervisor of the copy editors. 

  • A broad, flat, wooden bar, a slat, especially as used to secure a door, window, etc. 

  • The vagina. 

  • A channel opening in the stator or rotor of a rotating machine for ventilation and insertion of windings. 

  • The track of an animal, especially a deer; spoor. 

  • A crack or fissure in a glacier or snowfield; a chasm; a crevasse. 

  • A space in memory or on disk etc. in which a particular type of object can be stored. 

  • A rectangular area directly in front of the net and extending toward the blue line. 

  • A period of time within a schedule or sequence. 

  • A narrow depression, perforation, or aperture; especially, one for the reception of a piece fitting or sliding in it. 

  • A metal bolt or wooden bar, especially as a crosspiece. 

  • The barrel or tube of a wave. 

  • A slot machine designed for gambling. 

  • The area between the last offensive lineman on either side of the center and the wide receiver on that side. 

  • In a flying display, the fourth position; after the leader and two wingmen. 

  • The allocated time for an aircraft's departure or arrival at an airport's runway. 

verb
  • To kick the ball between the posts for a goal; to score a goal by doing this. 

  • To fall, or cause to fall, into a crevasse. 

  • To assign something or someone into a slot (gap in a schedule or sequence) 

  • To put something (such as a coin) into a slot (narrow aperture) 

  • To create a slot (narrow aperture or groove), as for example by cutting or machining. 

  • To put something where it belongs. 

  • To kill. 

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