How to say "frequency" in Japanese

• 回数かいすうJLPT N2approx.Common
  nounPrimarily means the number of times something happens or is done — a count rather than a rate. As a rendering of 'frequency' it fits when you are literally tallying occurrences, e.g. how many times you visited.
  いつもより尿にょうの回数かいすうが多おおいです。↗

  I urinate more often than usual.
• 頻度ひんどCommon
  nounThe default word for 'frequency' in the sense of how often something occurs. Use it for frequency of use, of meetings, of symptoms, and similar everyday and abstract contexts.
  「Kanji list」という機能きのうに新聞しんぶん記事きじ頻度ひんどを追加ついかしました。↗

  I added newspaper article frequency data to the 'Kanji list' function.
• 度数どすうCommon
  nounCovers frequency and incidence, especially in statistical, medical, and mathematical contexts such as frequency distributions. It also appears in other technical senses, so it is not the everyday word for 'how often'.
  ＮＴＴは３００度ど数すう以上いじょうのテレホンカードを廃止はいしした。↗

  NTT cancelled telephone cards with over 300 units.
• 周波数しゅうはすうCommon
  nounThe word for frequency of waveforms and oscillations — radio, sound, electronics, hertz. For this technical sense it is essentially the only choice; it does not mean 'how often' in ordinary contexts.
  周波数しゅうはすうの平均値へいきんちは振幅しんぷくの増大ぞうだいにしたがって減げんじる。↗

  The mean value of the frequency decreases with increasing amplitude.

Use 頻度 for how often something occurs, 周波数 for waveform/technical frequency, 回数 for counting how many times, and 度数 mainly in statistical or technical contexts.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 回数かいすうnumber of times
• 頻度ひんどfrequency (of occurrence)
• 度数どすうfrequency
• 周波数しゅうはすうfrequency (esp. of waveforms)
• 周波しゅうはcycle
• フリークエンシーfrequency
• 発生率はっせいりつfrequency
• 頻度数ひんどすうfrequency
• 振動数しんどうすうfrequency
• 頻数ひんすうfrequency
• 出現頻度しゅつげんひんどfrequency (of appearance)
• 盛行せいこうfrequency
• オーロラのかなたへFrequency (film)
• 運転時隔うんてんじかくheadway (between trains, etc.)
• 繁はんcomplexity