frequency
rate of occurrence / cycle rate
[C/U] Both
pl: frequencies
This term conveys a sense of rhythmic repetition or a steady pulse. It is used in technical settings to describe the precise speed of a vibration or signal, where accuracy is paramount. In these contexts, it feels clinical and mathematical. In social or general contexts, it describes a pattern of habit or occurrence. It suggests a measurable rate of behavior, often used to analyze trends or habits, such as the frequency of a person's gym visits or the frequency of a specific error in a report.
Countable when referring to a specific rate of vibration in physics (e.g., different frequencies of light). Uncountable when referring to the general concept of how often something happens.