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

遺誡[ikai] one's last caution
誡める[imashimeru] to admonish
訓誡[kunkai] warning
誡告[kaikoku] warning

教誡[kyoukai] counselling (often of imprisoned criminals by a chaplain, etc.)
十誡[jikkai] the 10 precepts
誡め[imashime] caution