Quote Originally Posted by RicaRuin View Post
Trials are all those that are called 'Prüfungen' in the german client, so all the Content that is in the Duty Finder in the tabs with the angry red smiley.

Trials are 8 man versus a singular boss (old trials have a 4 man setting as well) while dungeons are 4 man exploring the dungeon with mini bosses and a final boss. (Exception: Meridanum and Praetorium as 8 man dungeon.)
There are 8 man raids that are just a singular boss as well, but those are in the tabs with a red/orange cave symbol.