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

黄鉄鉱[outekkou] iron pyrites
金鉱地[kinkouchi] gold field
原鉱[genkou] (raw) ore
鉱化[kouka] mineralize
鉱業[kougyou] mining industry

鉱山[kouzan] mine (ore)
鉱山技師[kouzangishi] mining engineer
鉱山業[kouzangyou] mining industry
鉱質[koushitsu] mineral
鉱床[koushou] ore deposit