Fetish is very often used as another term for kink.
The dictionary definition of fetish is straight forward: “An excessive or irrational devotion to some activity, i.e. a fetish of cleanliness”
Of course, as all things in real life, the definition in real life is harder. Terms like ‘excessive’ or ‘irrational’ mean different things for different people. What one person considers a normal activity they enjoy, others will classify as excessive.
Fetishes have two very common misconceptions. For one, a fetish does not necessarily have anything to do with sex. Leather, candle light and similar can be fetishes without having a direct sexual meaning. The second misconception is that a fetish is always something bad. Many fetishes have absolutely no negative impact, i.e. a fetish for girls with small breasts. Many psychologists only recommend treatment or lifestyle changes if a fetish interferes with normal life.