The term "actual fertility" refers to the ability of an organism to reproduce or to produce offspring successfully. There are several ways to describe actual fertility, including reproductive fitness, fecundity, and fecundability. Reproductive fitness typically refers to the ability of an organism to pass on its genes to the next generation successfully. Fecundity, on the other hand, refers to the number of offspring an organism produces in a single reproductive event. The term fecundability refers to the probability that an organism will conceive during a given period and under specific conditions. Overall, these synonyms for actual fertility help us describe the various aspects that contribute to an organism's reproductive success.