固定

1. Origins, structure, and basic meaning

• Structure: 固定 (こてい) is an action noun, used with する, for securing an object or position so that it does not move.
• Basic usage: 棚を壁に固定した secures furniture to a wall against tipping, while カメラの位置を固定しておく keeps a camera position unchanged in preparation for filming.

2. Common pitfalls and similar expressions

• Attachment point and maintained position
  • In 棚を壁に固定する, に marks the attachment point, while 位置を固定する makes the setting to be held still the object. Neither the wall nor filming itself is what gets fixed.