runway vs trough

runway

noun
  • A defined, narrow section of land or an artificial structure used for access. 

  • In javelin, long jump, and similar events: a short track along which athletes can accelerate themselves for their jumps or throws. 

  • A stream bed. 

  • Hence, the number of months that a startup company can operate by using up its cash reserves. 

  • The usual path taken by deer or other wild animals, such as from a forest to a water source. 

  • A narrow walkway (often on a platform) extending from a stage on which people walk, especially one used by models during fashion shows. 

  • A section of land, usually paved, for airplanes to land on or take off from. 

trough

noun
  • Any similarly shaped container. 

  • A gutter under the eaves of a building; an eaves trough. 

  • A linear atmospheric depression associated with a weather front. 

  • A long, narrow container, open on top, for feeding or watering animals. 

  • A rectangular container used for washing or rinsing clothes. 

  • A long, narrow depression between waves or ridges; the low portion of a wave cycle. 

  • A channel for conveying water or other farm liquids (such as milk) from place to place by gravity; any ‘U’ or ‘V’ cross-sectioned irrigation channel. 

  • A short, narrow canal designed to hold water until it drains or evaporates. 

  • low turning point or a local minimum of a business cycle 

verb
  • To eat in a vulgar style, as if from a trough. 

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