偽金[nisegane] counterfeit money
偽首[nisekubi] falsified severed head
偽り[itsuwari] lie
偽り語る[itsuwarikataru] to speak falsely
偽り者[itsuwarimono] impostor

偽り誓う[itsuwarichikau] to swear falsely
偽る[itsuwaru] to lie
偽悪[giaku] pretense of evil
偽印[giin] forged seal

御金[okane] money
金糸雀[kinshijaku] canary (esp. the island canary, Serinus canaria)
違約金[iyakukin] penalty for contract breach
一刻千金[ikkokusenkin] every moment is precious
一字千金[ichijisenkin] word of great value

一時金[ichijikin] lump sum
一時賜金[ichijishikin] lump-sum grant
引き金を引く[hikiganewohiku] to pull the trigger
引当金[hikiatekin] reserves
隠れ借金[kakureshakkin] hidden debts