Guild Wars 2

I was looking at the wiki here GW2 Wiki Potion Page and I saw at the bottom of the page this statement:
“Potion bonuses stack with bonuses from foods and other sources. They do not stack with other potions or Tuning Crystals.”
Q: So what exactly is meant by bonuses?

I generally use Master’s Tuning Crystals and Bowls of Orrian Truffle Soup on my Necro.
Q: Does this mean that I’m not getting the damage addition from the crystals or does bonuses only mean the +10 exp per kill?

It is referring to the fact that one will overwrite the other. If you are using a tuning crystal already and then drink a potion, the potion’s effect will replace the tuning crystal.

Look at the icon when hovering an consumable. If the icon is the same, they’ll replace each other.

Potions and tuning crystals use the wrench buff icon which are called utility buffs. While food uses the apple buff icon which is nourishment buff. You can only have one of each.

Okay, so what you’re saying is that using a tuning crystal which has a wrench icon and using a consumable that has an apple icon won’t replace each other. But only if I use 2 consumables with an apple icon or wrench icon, the consumable with the same icon will replace each other?
So I can assume that using a consumable with a wrench icon will not override a consumable with an apple icon and vice versa?

Yes. Here’s the wiki entry.

http://wiki.guildwars2.com/wiki/Nourishment