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

異彩[isai] conspicuousness (usu. color)
五彩[gosai] the five colours: green, yellow, red, white and black
光彩[kousai] brilliance
彩り[irodori] coloring
彩る[irodoru] to colour

彩色[saishiki] colouring
彩度[saido] chroma
色彩[shikisai] colour
水彩画[suisaiga] watercolor painting
多彩[tasai] variegated