Preponderance
Part of speech: noun
Definition: Excess or superiority of weight, influence, or power, etc.; an outweighing. The excess of weight of that part of a cannon behind the trunnions over that in front of them. The greater portion of the weight. The majority.
Prevalence
Part of speech: noun
Definition: The quality or condition of being prevalent; superior strength, force, or influence; general existence, reception, or practice; wide extension; as the prevalence of virtue, of a fashion, or of a disease; the prevalence of a rumor.The total number of cases of a disease in the given statistical population at a given time.The total number of cases of a disease in the given statistical population at a given time, divided by the number of individuals in the population.