The following is true about prevalence and incidence -
Incidence
Incidence = No of new cases during a given time period / Population at risk during that period x 100

Numerator (new cases) is a part of denominator (population at risk including those who have developed disease, i.e. the cases).
Time period is specified
Multiplier is 1000


All are features of rate, so incidence is a rate.

Prevalence → Prevalence is proportion.
Both are rates
Prevalence is a rate but incidence is not
Incidence is a rate but prevalence is not
Both are not rates