Why is the moon called the moon? What does this mean?

The words "Moon" and "Moon" in 1 have existed since Oracle Bone Inscriptions's time and are purely hieroglyphics. Nouns in ancient classical Chinese prefer monosyllabic words, and a word "moon" means the moon.

2. Shang dynasty liked to use Oracle bones for divination, and the unearthed Oracle bones contained the words of day and month. The sun is the most abundant in yang, and the moon is called Taiyin, which includes the moon.