According to WHO there are several types of violence that require different interventions. It seems that the word violence implies that there is physical harm that takes you to the emergency room, but this is not the case. There are many ways of treating people badly, and when this is exercised because of the fact of being a woman and with the contempt that it implies, it could be considered as gender violence. The same would happen in the reverse case, if the woman treated the man badly just because she was a man.
According to the World Health Organization, the most common and prevalent types of violence are:
Against women. An act of violence that causes or is likely to cause physical, sexual, or mental harm or suffering to a woman; includes threats, coercion, arbitrary deprivation of liberty, in public or in private. Includes intimate partner violence, sexual violence by someone other than a partner, trafficking, and harmful practices such as female genital mutilation.
Couple. Behavior by an intimate partner that causes physical, sexual or psychological harm, including acts of physical aggression, sexual coercion, psychological abuse and control. It includes that inflicted by a current or former spouse or other intimate partner. Also called domestic violence, wife or spouse abuse. "Dating violence" is used for violence in intimate relationships between young people and does not involve cohabitation.
Sexual. It is any sexual act, attempt to perform a sexual act, unwanted comment of sexual content, trafficking, or any other way against a person's sexuality through coercion, regardless of their relationship to the victim, in any environment, including, but not limited to, home and work.