hurdle vs release

hurdle

verb
  • To overcome an obstacle. 

  • To compete in the track and field events of hurdles (e.g. high hurdles). 

  • To jump over something while running. 

  • To hedge, cover, make, or enclose with hurdles. 

noun
  • An artificial barrier, variously constructed, over which athletes or horses jump in a race. 

  • An obstacle, real or perceived, physical or abstract. 

  • A movable frame of wattled twigs, osiers, or withes and stakes, or sometimes of iron, used for enclosing land, for folding sheep and cattle, for gates, etc.; also, in fortification, used as revetments, and for other purposes. 

release

verb
  • To loosen; to relax; to remove the obligation of. 

  • To set free a chemical substance. 

  • To let go (of); to cease to hold or contain. 

  • To make available to the public. 

  • To set up; to provide with a goal-scoring opportunity 

  • To free or liberate; to set free. 

  • (of a call) To hang up. 

  • To let go, as a legal claim; to discharge or relinquish a right to, as lands or tenements, by conveying to another who has some right or estate in possession, as when the person in remainder releases his right to the tenant in possession; to quit. 

  • to come out; be out. 

  • To discharge. 

  • To lease again; to grant a new lease of; to let back. 

noun
  • The act or manner of ending a sound. 

  • In the block system, a printed card conveying information and instructions to be used at intermediate sidings without telegraphic stations. 

  • The giving up of a claim, especially a debt. 

  • Anything recently released or made available (as for sale). 

  • A catch on a motor-starting rheostat, which automatically releases the rheostat arm and so stops the motor in case of a break in the field circuit. 

  • The catch on an electromagnetic circuit breaker for a motor, triggered in the event of an overload. 

  • The lever or button on a camera that opens the shutter to allow a photograph to be taken 

  • Orgasm. 

  • A kind of bridge used in jazz music. 

  • The distribution of an initial or new and upgraded version of a computer software product; the distribution can be either public or private. 

  • The process by which a chemical substance is set free. 

  • The event of setting (someone or something) free (e.g. hostages, slaves, prisoners, caged animals, hooked or stuck mechanisms). 

  • That which is released, untied or let go. 

  • Liberation from pain or suffering. 

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