回数

1. Origins, structure, and basic meaning

• Structure: 回数 is read as かいすう and is a noun for the number of times an action or event occurs.
• Basic usage: Recording the number of visits appears in 行った回数を記録する, while increasing practice sessions appears in 練習の回数を増やす.

2. Common pitfalls and similar expressions

• Action modification and activity connection
  • An action modifies it directly, while an activity noun connects with の.
• Difference from 頻度
  • 回数 focuses on a count rather than how often something occurs within a period.