挿入

1. Origins, structure, and basic meaning

• Structure: 挿入(そうにゅう) means inserting an object or content into something or between existing parts.
• Basic usage: It can describe inserting an illustration into instructions or a card into a device.

2. Common pitfalls and similar expressions

• Object and destination
  • In カードを挿入口に挿入すると, を marks the card being inserted and に marks its destination.
• Adding and inserting
  • 追加(ついか) focuses on adding more; 挿入 focuses on placing something at a position or between existing parts.