Fidelity

Fidelity
the state of remaining loyal to someone and keeping the promises you made to that person.

Arena

Arena


a central, level area for the performance of sports or entertainment, having raised seats around it from which people can see the activities, or a building containing the seats and performance area:

 An arena is also a particular activity, esp. one that involves competition and gets a lot of public attention:

She entered the political arena as a young woman.

a sports arena