Rape is a type of sexual assault usually involving sexual intercourse or other forms of sexual penetration perpetrated against a person without that person's consent. The act may be carried out by physical force, coercion, abuse of authority or against a person who is incapable of giving valid consent, such as one who is unconscious, incapacitated, has a intellectual disability or below the legal age of consent. The term rape is sometimes used interchangeably with the term sexual assault.