Here's why:
* "Trap Jammer" is not a specific card in any card game. This term could be used in different ways in different games.
* "Jammer" is also not a universally understood card type. Different games might have different cards that can be referred to as jammers, with different effects.
To provide you with a proper answer, please tell me:
1. What game are you referring to? (e.g., Yu-Gi-Oh!, Magic: The Gathering, Hearthstone, etc.)
2. What specific cards are you talking about? If you know the names of the cards, that would be helpful.
Once you provide more information, I can tell you if the trap jammer card in your game negates another jammer card.