Partner violence is a recognized phenomenon in Sweden. Unfortunately, sibling violence does not seem to be noticed at all. Thoughts regarding whether there is any reason to differentiate between violence between adults and violence between siblings arose, which is why the purpose of the study is to compare differences between sibling violence and violence between adults. In summary, the results show that both violence between adults and sibling violence is a normalized violence in society, even though sibling violence seems to be even more normalized. In addition, the results show as in previous research that all forms of violence, such as physical, psychological, material and latent violence, are found in both sibling violence and partner violence. Even though, there is some disagreement about how they should be named. Finally, the essay shows how violence arises as a result of powerlessness, which is why the importance of defining violence based on the function of the action has been identified as necessary.