According to Wikipedia, “Statutory Rape” is defined as:
Sexual activity in which one person is below the age required to legally consent to the sexual behavior. Also it usually refers to adults engaging in sex with minor children under the age of legal consent. it is a generic term, and very few jurisdictions use the actual term “statutory rape” in the language of statutes.
Different jurisdictions use many different statutory terms for the crime, such as “sexual assault”, “rape of a child”, “corruption of a minor”, “unlawful sex with a minor”, “carnal knowledge of a minor”, “unlawful carnal knowledge”, “sexual battery”, or “carnal knowledge”.
In statutory rape, overt force or threat need not be present. The laws presume coercion, because a minor or mentally challenged adult is legally incapable of giving consent to the act.
The term “statutory rape” generally refers to sex between an adult and a sexually mature minor past the age of puberty. Sexual relations with a prepubescent child, generically called child sexual abuse or molestation, is typically treated as a more serious crime.