In clinical practice, we often mention infertility and sterility, so what is the difference between them? Let us take a look. Infertility refers to a condition where a couple has regular sexual intercourse, does not take any contraceptive measures, and the duration reaches over a year, yet the female cannot become pregnant; this is called infertility. If the male can cause the female to become pregnant, or has previously impregnated a woman, but she cannot carry a baby to term, we call this sterility. This is the difference between infertility and sterility.