Powerslash

The second most popular Potter slash pairing is Harry/Snape, which belongs to the powerslash category, and again defies findings of early fan fiction studies focusing on buddyslash.

Order of the Phoenix featured Harry and Snape (a powerslash pairing par excellence) forced to become uncomfortably intimate with each other: Snape is teaching Harry how to prevent Voldemort from reading his thoughts by...reading Harry's thoughts; […]

Although the second most popular pairing in Potter slash fandom, Snape/Harry (or Snarry), could be categorized as enemyslash, it is also a prime example of powerslash.