日課

1. Origins, structure, and basic meaning

• Structure: 日課, read にっか, is a task or activity fixed as part of one's daily routine.
• Basic usage: It can be a morning walk taken every day or a grandfather's regular watering of garden flowers.

2. Common pitfalls and similar expressions

• An activity repeated as a daily routine
  • It denotes an activity repeated each day, such as a morning walk or watering flowers. It differs from a task performed only once.