Kink, or kinkiness, is an umbrella term that describes a large category of sexual practices, fantasies, and concepts that are considered unorthodox or unconventional.
When it comes to kinky sexual practices, the majority of people often think of BDSM plays and intercourses. As a result, BDSM kink is a popular term that is used to describe these atypical sexual methods. Although it is true that kinks and the BDSM community are tightly connected, there are far more sexual activities that can be considered kinky as well. For example, among these acts you can find participating in orgies, spanking, role-playing, swinging, dripping candle wax on to the skin, using sex toys, and a number of unusual sex positions.
In the past, kink and kinky sex, as concepts were considered inappropriate so that is why the people were rarely talking about them. However, today, things have been drastically changed, allowing the word "kink" to become very acceptible and known worldwide. In fact, the fame of the term has grown so much that it is even becoming a special form of niche entertainment. Alongside numerous movies and books centering around kinks, the release of E. L. James' "50 Shades of Grey" is what sparked the most interest in such sexual practices.
Nowadays, there are plenty of unconventional activities and BDSM kinks people can choose to adopt. The whole point of kinky sex and practices is for the participants to enjoy the uncommon way of engaging in sexual activity, hence it has to be consensual. So, if you have an interest in BDSM kinks, for example, we highly advise you to talk to your partner before executing any of the acts.
Finally, the word kink can sometimes come with a difficult interpretation not only because it is such a broad term but also because it is very subjective. Some people use sex toys to spice up their sex life routinely, while others consider such usage kinky, so there is really no telling which activities are really kinky and which are not.