刻

also 時 · 秋

1. noun, 刻 signifies a time of day; 秋 signifies an important time time; hour; moment

こく also 剋

1. noun, historical period of time (usu. a period of approx. two hours corresponding to one of the signs of the Chinese zodiac)
2. carving; engraving; cutting; mincing
3. strictness; cruelty

きざ

1. noun scratch