#swiftness__swiftnes__fastness  a rate (usually rapid) at which something happens; "the project advanced with gratifying speed"
  supertype:  pace.rate__rate  the relative speed of progress or change; "he lived at a fast pace"; "he works at a great rate"; "the pace of events accelerated"
  subtype:  hurriedness__hurriednes__hastiness__hastines  overly eager speed (and possible carelessness); "he soon regretted his haste"
     subtype:  precipitateness__abruptness__precipitance__precipitancy__suddenness  the quality of happening with headlong haste or without warning
  subtype:  acceleration.rate  an increase in speed; "modern science caused an acceleration of cultural change"
     subtype:  getaway__pickup  the attribute of being capable of rapid acceleration; "his car has a lot of pickup"
     subtype:  precipitation.acceleration  an unexpected acceleration or hastening: "he is responsible for the precipitation of his own demise"
     subtype:  acceleration  (physics) a rate of change of velocity
        subtype:  centripetal_acceleration__centripetalacceleration  the acceleration toward the center that holds a satellite in elliptical orbit
        subtype:  acceleration_unit  a unit for measuring acceleration
           subtype:  gal.acceleration_unit  a unit of gravitational acceleration equal to one centimeter per second per second (named after Galileo)
  subtype:  deceleration__slowing  a decrease in speed
  subtype:  execution_speed__executionspeed  (computer science) the speed with which a computational device can execute instructions; measured in MIPS
  subtype:  graduality__gradualness  the quality of being gradual or of coming about by gradual stages

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