Has separate XP level requirement, XP level cost and resource cost. For example, an enchantment may have an XP level requirement of 13, meaning it will only become available for enchanting after reaching 13 levels of experience, but will only cost 2 XP levels and 2 of a resource.
Only one randomly chosen enchantment will be displayed in the tooltip.
This means that additional enchantments could still be applied, even if they aren't mentioned in the tooltip. For example, if it says "Sharpness" in the tooltip when enchanting a sword, you know the enchantment can't include Smite or Bane of Arthropods, since they are not compatible with each other. However it may still add Knockback or Fire Aspect.
Enchantments only cost 1-3 XP levels.
Each additional XP level adds a tier of enchantment.
The list of possible enchantments is not reset until you enchant an item.
In multiplayer, the individual player will have to enchant an item in order for his/her own enchantment list to update.