頂上

1. Origins, structure, and basic meaning

• Structure: 頂上(ちょうじょう) is the highest part of something tall, such as a mountain or tower.
• Basic usage: It describes the summit reached on a climb or an ornament at the very top of a tower.

2. Common pitfalls and similar expressions

• The range compared with 山頂
  • 山頂(さんちょう) specifically identifies a mountain summit. 頂上 also applies beyond mountains, including the top of the tower in the second example.