bewitching

1. Origins, structure, and basic meaning

• Structure: 妖 is associated with a mysterious or bewitching quality; its on-reading is よう.
• Basic usage: 妖怪(ようかい) means a supernatural creature or monster, while 妖精(ようせい) means a fairy.

2. Common pitfalls and similar expressions

• The words for a supernatural creature and a fairy
  • 怖い妖怪 means a frightening monster. 妖精の羽 means fairy wings; this word appears with a fairy guiding a traveler or with a winged costume.
  • Both words begin with よう; their latter parts are かい and せい respectively.