火持ち
  火保ち
  ひもち
  noun (common) (futsuumeishi)
  fire-holding qualities
  length of time a fire burns
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  日持ち
  日保ち
  ひもち
  noun (common) (futsuumeishi)
  length of time which food products will keep
  noun or participle which takes the aux. verb suru
  to keep a long time
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