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

遺訓[ikun] dying instructions
音訓[onkun] kanji readings
漢文訓読[kanbunkundoku] reading a Chinese text in Japanese
義訓[gikun] reading of a kanji by meaning
訓える[oshieru] to teach

教訓[kyoukun] lesson
訓育[kuniku] discipline
訓誡[kunkai] warning
訓示[kunji] instruction