Trolling does not mean just making rude remarks: Shouting swear words at someone doesn't count as trolling; it's just flaming, and isn't funny. Spam isn't trolling either; it pisses people off, but it's lame.
The definition of aggravated is something that intensifies or worsens something like a condition or circumstance. Carrying a gun while committing a burglary is an example of aggravated burglary and carries with it a more severe penalty. Aggravated is defined as something was made more intense or acute.
In ordinary language, a crime is an unlawful act punishable by a state or other authority. The term crime does not, in modern criminal law, have any simple and universally accepted definition, though statutory definitions have been provided for certain purposes. The most popular view is that crime is a category created by law; in other words, something is a crime if declared as such by the relevant and applicable law. One proposed definition is that a crime or offence is an act harmful not onl