KANJI GUIDE
A flower. 花見 is going to look at cherry blossom; 花火 is fireworks — fire flowers.
The sky, and heaven with it. 天国 is paradise; 天気 is the weather.
Wisdom that comes from seeing clearly. The older, weightier form of 知恵.
Long life, and the celebration of it. The character on wedding envelopes and New Year food.