abuse
(to use something for the wrong purpose or for your own advantage)
- She consistently voices her opposition to those who abuse their power.
- He repeatedly abused his position getting other people to do things for him.
misuse
(to use something incorrectly, or in a way that was not intended)
- Refunds will not be provided if you misuse the product and cause damage to it.
- Instructors warned against the misuse of school computers for unauthorized activities.