贋印[nisein] forged seal
贋金[nisegane] counterfeit money
贋作[gansaku] fake
贋手紙[nisetegami] forged letter
贋首[nisekubi] falsified severed head

贋造[ganzou] counterfeiting
贋造紙幣[ganzoushihei] counterfeit paper money
贋者[nisemono] imposter
贋い[magai] imitation

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