| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | fluoride toothpaste | East Asia | Fluoride toothpaste is less commonly used in Japan and East Asia, where natural and herbal toothpaste are often preferred. | 1 |
| 2 | hydrogen fluoride | East Asia | Hydrogen fluoride is also used in the semiconductor industry for cleaning and etching silicon wafers. | 1 |