rise

1. Origins, structure, and basic meaning

• Structure: 騰 denotes rising upward or a sharp increase; the source lists only the on-reading とう.
• Basic usage: 沸騰 is the boiling of a liquid, while 高騰 is a sharp rise in prices or costs.

2. Common pitfalls and similar expressions

• 沸騰 / 高騰
  • 沸騰: This noun refers to the physical process of a liquid boiling and forming bubbles. Example: 鍋の水が沸騰して泡が大きくなった。
  • 高騰: This noun describes prices or costs rising sharply. Example: 材料費が高騰して商品の価格を見直した。