Kink is a term use to refer to a broad range of sexual practices (sometimes referred to as "kinky") such as spanking, bondage, domination and submission, sadomasochism (BDSM). Kink sexual practices transgress what are considered "normal" sexual boundaries as a means of heightening the intimacy between sexual partners. (It is therefore distinguished from sexual fetishism, in which sexual desires are displaced from the intimate partner to an inanimate object). Because of its relation to "normal" sexual boundaries, which themselves vary by time and place, the definition of what is and is not kink varies widely as well. They are sometimes considered to be perverts by "outsiders".