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

肝臓[kanzou] liver
五臓[gozou] the five viscera (liver, lungs, heart, kidney and spleen)
五臓六腑[gozouroppu] the internal organs
心臓[shinzou] heart
心臓の鼓動[shinzounokodou] heartbeat

心臓部[shinzoubu] central part
腎臓[jinzou] kidney
臓器[zouki] internal organs
臓器移植[zoukiishoku] organ transplant