遺失[ishitsu] loss
遺失物[ishitsubutsu] lost article
一失[isshitsu] disadvantage (defect, error)
一得一失[ittokuisshitsu] gaining some and losing some
栄養失調[eiyoushicchou] malnutrition

過失[kashitsu] error
見失う[miushinau] to lose sight of
失う[ushinau] to lose
失する[shissuru] to lose
失せる[useru] to disappear

悪銭[akusen] ill-gotten money
一紙半銭[isshihansen] small sum
金銭[kinsen] money
金銭的ダメージ[kinsentekidameeji] monetary damages
古銭[kosen] old coin

古銭学[kosengaku] numismatics
口銭[kousen] commission
自動金銭出入機[jidoukinsenshutsunyuuki] automatic teller machine
借銭[shakusen] debt
守銭奴[shusendo] miser