錯覚

1. Origins, structure, and basic meaning

• Structure: 錯覚(さっかく) describes perceiving something differently from reality or misidentifying it; it also appears as 錯覚する.
• Basic usage: It appears when mirrors make a room seem larger or a distant person is mistaken for someone familiar.

2. Common pitfalls and similar expressions

• An impression and a mistaken judgment
  • 錯覚を覚える means having an impression that differs from reality, while 友人だと錯覚する means mistakenly judging someone to be a friend.
• Scope compared with 勘違い
  • 勘違い broadly includes misunderstanding an appointment time or the meaning of a remark.
  • 錯覚 particularly suits contexts where how something appears or feels diverges from reality.