| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | flash | East Asia | Flash photography is considered impolite, especially in quiet or serene settings, and is often avoided in favor of natural lighting. | 1 |
| 2 | flash cards | East Asia | Utilized in language learning and as a tool for memorization, commonly seen in educational and business settings. | 1 |