They are measures of changes in population.
They may be measured in terms of time or in terms of some relevant subset of the population.
Chat with our AI personalities
The population decreases when the death rate is higher than the birthrate.
Standard of living
10 per 1000 BR and 10 per 1000 DR
One option is the word birthrate.
Death Rate is the actual rate of death where Crude Death Rate is a guess on the death rate.