Custom
Habit
noun, の adjective
しゅうかん
習慣 (しゅうかん) Custom, Habit
恒例 (こうれい) Established Practice, Custom
主観 (しゅかん) Subjective View, Subjective Opinion, Subjective
趣味 (しゅみ) Hobby
周期 (しゅうき) Cycle, Period
A Custom 習慣 is something you learn 習 and become accustomed 慣 to.
Our Custom is to put shoes in a shoe しゅう can かん