妖怪

1. Origins, structure, and basic meaning

• Structure: 妖怪, read ようかい, denotes a nonhuman supernatural creature appearing in folklore or stories.
• Basic usage: It names a supernatural mountain being in a folktale and a frightening monster drawn by a child.

2. Common pitfalls and similar expressions

• A supernatural being of folklore
  • The examples use it for a nonhuman being in folklore or stories, not as an insult for an unfamiliar person.