BDSM vs abuse, there is no comparison. These are two completely different interactions that should not be compared to each other. One is forced, and the other is mutually agreed upon beforehand.
There is a significant difference between sex and assault, but often the two can cross lines. The only time sex and assault should ever cross or blur the lines is when it is consensual.
Unfortunately, kink and abuse are more common than most would believe, and many people put up with the abuse because they have been led to believe that it is part of the dynamic.
The thing with verbal abuse is that it comes out of nowhere; it starts with subtle undertones and escalates from there. By the time you realize you are in an abusive relationship, the damage has already been done.
Thousands of children often in need of guidance and support were cast aside; they were the victims of grooming gangs but were instead persecuted by the community members supposed to look after their wellbeing.
Sexual exploitation starts with grooming, there are six stages of grooming, and it will be worth knowing these stages; if ever you feel you or someone you know might be sexually exploited or groomed.