Kinky
This is an intimate practice that involves Fantasy concepts, Situations, or Relationship Styles. Kinks can be sexual but not always, something that someone enjoys doing. something that goes beyond a tradition and is not needed to be an alternative Sexual interest, Fantasy may include BDSM, role-playing, and whipping. This is added to the sexual Experience but not to achieve pleasure.
N.B Everybody might have different meanings and views on this, How do you view it?
Fetish
Fetish a sexual fixation on either an object, an act, or a body part that you have to have in possession to achieve sexual gravitation or pleasure.
Link to sexual arousal and is viewed as a behavior someone cannot get aroused without.