KANJI GUIDE
The sky, and heaven with it. 天国 is paradise; 天気 is the weather.
The character in 武士道, the way of the samurai, and in 柔道. Read dō, and the head of it is taken for do.
Gold, and money with it. 金曜日 is Friday.
Long life, and the celebration of it. The character on wedding envelopes and New Year food.