係合
  けいごう
  noun (common) (futsuumeishi)
  noun or participle which takes the aux. verb suru
  joining elements so they mate or hook together (e.g. a clutch)
  engagement
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  契合
  けいごう
  noun (common) (futsuumeishi)
  noun or participle which takes the aux. verb suru
  coincidence of opinions, etc.
  agreement
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