#flowing__flow  the motion characteristic of fluids (liquids or gases)
  supertype:  change_of_location__travel  a movement through space that changes the location of something
  subtype:  fountain.flowing__jet  an artificially produced flow of water
  subtype:  ebb  the outward flow of the tide
  subtype:  flood.flowing  the inward flow of the tide; "a tide in the affairs of men which, taken at the flood, leads on to fortune" -Shakespeare
  subtype:  backflow__backflowing  a flow that returns toward its source
     subtype:  regurgitation  backflow of blood through a defective heart valve
  subtype:  airflow  the flow of air
  subtype:  current__stream  a steady flow (usually from natural causes); "the raft floated downstream on the current"; "he felt a stream of air"
     subtype:  tidal_flow__tidalflow__tidal_current__tidalcurrent  the water current caused by the tides
        subtype:  tidal_bore__tidalbore__bore__eagre__aegir__eager  a high wave (often dangerous) caused by tidal flow (as by colliding tidal currents or in a narrow estuary)
     subtype:  riptide__rip_current__ripcurrent  a strong surface current flowing outwards from a shore
     subtype:  undertide__undercurrent  a current below the surface of a fluid
        subtype:  sea_puss__undertow__sea-puss__sea_purse__seapurse__sea-purse__seapurse__sea-poose__seapoose  the seaward undercurrent created after waves have broken on the shore
     subtype:  violent_stream__violentstream__torrent  a violently fast stream of water (or other liquid); "the houses were swept away in the torrent"
     subtype:  eddy__twist  a miniature whirlpool or whirlwind resulting when the current of a fluid doubles back on itself
     subtype:  whirlpool__vortex__maelstrom  a powerful circular current of water (usually the resulting of conflicting tides)
        subtype:  Charybdis  (Greek mythology) a ship-devouring whirlpool lying on the other side of a narrow strait from Scylla
     subtype:  ocean_current__oceancurrent  the steady flow of surface ocean water in a prevailing direction
        subtype:  El_Nino  (oceanography) a weak warm ocean current that flows south off the coast of Ecuador at Christmas time
           subtype:  El_Nino_southern_oscillation  a more intense El Nino that occurs every few years when the welling up of cold nutrient-rich water does not occur; kills plankton and fish and affects weather patterns
        subtype:  equatorial_current  any of the ocean currents that flow westward at the equator
           subtype:  North_Equatorial_Current  an equatorial current that flows west across the Pacific just north of the equator
           subtype:  South_Equatorial_Current  an equatorial current that flows west across the Pacific just south of the equator
        subtype:  Gulf_stream  a warm ocean current that flows from the Gulf of Mexico northward through the Atlantic Ocean
        subtype:  Japan_current__Kuroshio_current__Kuroshio  a warm ocean current that flows NE off the coast of Japan into the N Pacific
        subtype:  Peruvian_current__Humboldt_current  a cold ocean current that flows north along the Pacific cost of South America before turning west
  subtype:  freshet__spate  the occurrence of a water flow resulting from sudden rain or melting snow
  subtype:  overspill__overflow__runoff  the occurrence of surplus liquid (as water) exceeding the limit or capacity
  subtype:  outpouring__discharge__run  the pouring forth of a fluid
     subtype:  squirt__jet__spirt  the occurrence of a sudden discharge (as of liquid)
        subtype:  spray.squirt  a jet of vapor
        subtype:  spritz  a quick squirt of some liquid (usually carbonated water)
     subtype:  leakage__leak__outflow  the unwanted discharge of a fluid from some container; "they tried to stop the escape of gas from the damaged pipe"; "he had to clean up the leak"
  subtype:  fluxion__flux  a flow or discharge
  subtype:  seepage__oozing  the process of seeping
     subtype:  exudation  the process of exuding; the slow escape of liquids from blood vessels through pores or breaks in the cell membranes
  subtype:  drip__trickle  flowing in drops; the formation and falling of drops of liquid; "there's a drip through the roof"
     subtype:  intravenous_drip__intravenousdrip  slow continuous drip introducing solutions intravenously (a drop at a time)
  subtype:  emission.flowing  the occurrence of a flow of water (as from a pipe)
  subtype:  gush__flush__outpouring  a sudden rapid flow (as of water); "he heard the flush of a toilet"; "there was a little gush of blood"; "she attacked him with an outpouring of words"
     subtype:  springtide.gush  a swelling rush of anything; "he rose on the springtide of prosperity"
  subtype:  spate__rush__surge__upsurge  a sudden forceful flow
     subtype:  onrush  a forceful forward rush; "it was forgotten in the onrush of events"

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