汚染源[osengen] source of pollution
音源[ongen] sound source
禍源[kagen] source of misfortune
供給源[kyoukyuugen] source of supply
経営資源[keieishigen] management resource

源氏物語[genjimonogatari] the Tale of the Genji
源泉[gensen] source
源流[genryuu] current-limiting
語源[gogen] word root

隠匿物資[intokubusshi] concealed materials
運転資金[untenshikin] working capital
英資[eishi] brilliant qualities
海外投資[kaigaitoushi] overseas investment
外国投資家[gaikokutoushika] foreign investor

外資[gaishi] foreign capital (e.g. in a company)
学資[gakushi] school expenses
巨資[kyoshi] large capital
軍資[gunshi] war materiel
軍資金[gunshikin] war funds

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