Tibia Guides kinds of introduce 2

Paladins
Paladins are balanced warriors. They are reasonable meele fighters, and they know how to handle their shields. However, even though they might be decent in close combat, that's not their main skill. The paladins are archers, and are known for their great skills in fighting at distance, with bow or spears for example. They have stronger physique than the mages, and therefore they have less mortality. They are also quite good at casting spells, obviously not as good as the mages, but still fairly good. They are the only vocation who can cast holy spells, which are very effective when fighting undeads.

Knights
Knights are the strongest, toughest and most resilient warriors in Tibia. They are close combat fighters, and can become dangerous with good meele weapons. Because of their impressive physique they can obtain incredibly good resilience. In general, knights are the hardest vocation to overcome. Another advantage of their impressive physique is that they can obtain a lot of heavy items, so they don't need to worry about their carrying capacity. However, they do have a weakness; their magic. They only know to cast a few spells, and their magic skills are very limited. Because of the fact that they mainly rely on their meele damage and only a few offensive spells they are not fast killers when it comes to harder monsters.