| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | knock | Japan | In some traditional settings, knocking on a door can be seen as rude or aggressive, and it's preferred to announce oneself verbally before entering. | 1 |
| 2 | knocker | Japan | Knockers are not commonly used on front doors, as doorbells are the more popular method for visitors to announce their arrival. | 1 |