九寸五分[kusungobu] dagger
弦楽五重奏曲[gengakugojuusoukyoku] string quintet
五つ[itsutsu] five
五つ子[itsutsugo] quintuplets
五悪[goaku] the five sins in Buddhism (murder, theft, adultery, falsehood and drink)

五音々階[goononkai] pentatonic scale
五戒[gokai] the five precepts (prohibitions against killing, theft, sexual misconduct, lying and intemperance)
五官[gokan] the five sense organs
五感[gokan] the five senses

１月[ichigatsu] January
ひと月[ichigetsu] one month
下弦の月[kagennotsuki] waning moon
何ヶ月[nankagetsu] how many months?
何月[nangatsu] what month

佳月[kagetsu] good month
か月[kagetsu] (number of) months
花鳥風月[kachoufuugetsu] beauties of nature
各月[kakugetsu] every month
隔月[kakugetsu] every second month

五月蠅い[urusai] noisy
青蠅[kinbae] greenbottle fly (esp. species Lucilia caesar)
猩々蠅[shoujoubae] fruit fly (any insect of family Drosophilidae)
馬蠅[umabae] horse botfly (Gasterophilus intestinalis)
蠅取[haetori] catching flies

家蠅[iebae] housefly (Musca domestica)
蒼蠅[souyou] bluebottle fly
蠅地獄[haejigoku] Venus flytrap
蠅取草[haetorigusa] Venus flytrap