Marital fertility refers to the ability of a married or coupled couple to produce offspring. It is a critical aspect of a couple's reproductive health and their desire to start a family. However, there are several terms that are often used interchangeably with marital fertility. These include fecundity, fertility rate, reproductive rate, conception rate, and procreation rate. These terms all refer to the ability of a couple to conceive and bear children. While they are similar, each one has a slightly different meaning and nuance. Nevertheless, they are vital terms when discussing the reproductive health of individuals and couples, and how it impacts societies and the global population.