五月蝿い[urusai] noisy
青蝿[kinbae] greenbottle fly (esp. species Lucilia caesar)
猩々蝿[shoujoubae] fruit fly (any insect of family Drosophilidae)
馬蝿[umabae] horse botfly (Gasterophilus intestinalis)
蝿取[haetori] catching flies

家蝿[iebae] housefly (Musca domestica)
蒼蝿[aobae] bluebottle fly
糞蝿[kusobae] dung fly
蝿地獄[haejigoku] Venus flytrap

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