perversion -
a curve that reverses the direction of something; "the tendrils of the plant exhibited perversion"; "perversion also shows up in kinky telephone cords"
perversion -
An instance of such abnormal activity or behaviour; rape.
Wikipedia
Perversion is a concept describing those types of human behavior that are a serious deviation from what is considered to be orthodox or normal. Although it can refer to varying forms of deviation, it is most often used to describe sexual behaviors that are seen by an individual as abnormal, repulsive or obsessive. Perversion differs from deviant behavior, since the latter refers to a recognized violation of social rules or norms.
