御古[ofuru] used article (esp. clothes)
手古摺る[tekozuru] to have much trouble
土耳古[toruko] Turkey
下稽古[shitageiko] rehearsal
懐古[kaiko] recalling the old days

擬古[giko] imitation of classical styles
擬古文[gikobun] classical style
稽古[keiko] practice
遠古登点[wokototen] marks to aid in reading Chinese classics
古え[inishie] antiquity

薫陶[kuntou] education
陶器[touki] porcelain (esp. soft-paste porcelain)
陶芸[tougei] ceramic art
陶芸家[tougeika] potter
陶工[toukou] potter

陶磁[touji] clay
陶磁器[toujiki] porcelain
陶磁器店[toujikiten] ceramic stores
陶酔[tousui] intoxication
鬱陶しい[uttoushii] gloomy (e.g. mood)