prevalence
commonness / widespread nature / frequency / occurrence rate
Noun
This term describes the state of being widespread or common. It carries a neutral to clinical tone, often used to describe the frequency of a trait, a belief, or a condition across a population. It focuses on the total existence of a phenomenon rather than the rate of new occurrences. In medical and epidemiological contexts, it is a precise technical term used to quantify the proportion of a population affected by a disease at a specific time. This distinguishes it from incidence, which refers only to new cases appearing over time.