地軸

1. Origins, structure, and basic meaning

• Structure: 地軸 is read as ちじく and is a noun for Earth's axis, the reference line around which Earth rotates.
• Basic usage: Say 地軸の向き for its direction and 地軸と季節の関係 for its relationship with another phenomenon.

2. Common pitfalls and similar expressions

• Model and axis
  • Tilting a model is a way to demonstrate the axis's direction; the model itself is not called 地軸.
• の and と
  • の links the axis to its direction, while と joins the axis and the seasons as the two sides of a relationship.