He was accused of trolling on social media.

There were many trollings on social media.

Concern trolls often pretend to be sympathetic but actually have ulterior motives.

Patent trolls are a major problem in the tech industry.

Concern-trolls often pretend to be sympathetic but actually have ulterior motives.

The hill-trolls roamed the countryside, causing havoc wherever they went.

Trademark trolls are a growing problem in the business world.

Copyright trolls are becoming a major issue in the entertainment industry.

RIP trolls are individuals who mock or make fun of someone who has recently died.

This online forum is known for being troll-friendly.