#alteration__modification__adjustment  the act of making something different (as e.g. the size of a garment)
  supertype:  change  the action of changing something; "the change of government had no impact on the economy"; "his change on abortion cost him the election"
  subtype:  loosening  the act of making something less tight
     subtype:  untying__undoing__unfastening  loosening the ties that fasten something; "the tying of bow ties is an art; the untying is easy"
  subtype:  tightening  the act of making something tighter; "the tightening of economic controls"
     subtype:  take-up  the action of taking up as by tightening or absorption or reeling in
  subtype:  accommodation  (physiology) the automatic adjustment in focal length of the lens of the eye
     subtype:  readjustment  the act of adjusting again (to changed circumstances)
     subtype:  domestication  accommodation to domestic life; "her explorer husband resisted all her attempts at domestication"
     subtype:  habituation  a general accommodation to unchanging environmental conditions
  subtype:  adaptation  (physiology) the responsive adjustment of a sense organ (as the eye) to varying conditions (as of light)
     subtype:  dark_adaptation  the process of adjusting the eyes to low levels of illumination; cones adapt first; rods continue to adapt for up to four hours
     subtype:  light_adaptation__lightadaptation  the process of adjusting the eyes to relatively high levels of illumination; the pupil constricts and the cones system is operative
  subtype:  qualification  the act of modification or changing the strength of some idea; "his new position involves a qualification of his party's platform"

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