Meaning and Usage
"回数" (かいすう) refers to the number of times an event or action occurs. It is commonly used in everyday conversation, business, and instructions to specify frequency or limits.
Common Contexts
You will often see "回数" when talking about how often something happens, such as exercise sessions, meetings, or usage limits (e.g., coupons or tickets).
Collocations and Patterns
- 回数を増やす: to increase the number of times
- 回数を減らす: to decrease the number of times
- 一回／一回だけ: one time only
- 一人一回: once per person
Register and Nuance
"回数" is neutral and appropriate in both formal and informal contexts. It is a straightforward way to talk about frequency without implying anything about quality or duration.
Common Mistake
Learners sometimes confuse "回数" with "頻度" (ひんど), which also means frequency but is more about how often something happens over a period and is often used in statistical or scientific contexts. Use "回数" for counting specific occurrences.