習い事

1. Origins, structure, and basic meaning

• Structure: In 習い事 (ならいごと), learning 習い and activity 事 combine to denote lessons or a learned hobby.
• Basic usage: 習い事 is a hobby or skill learned regularly through lessons or instruction.

2. Common pitfalls and similar expressions

• A regularly learned activity
  • It focuses on an activity one attends to learn, rather than one explanation or the whole mandatory school curriculum.