急増

1. Origins, structure, and basic meaning

• Structure: 急増 means a number or quantity increasing rapidly over a short time.
• Basic usage: It is used for a sudden rise in orders or a rapid increase in river flow after rain.

2. Common pitfalls and similar expressions

• Difference from 増加
  • 増加 states that something increases. 急増 emphasizes that the increase is rapid and sharp.