arena

nouns

a particular environment or walk of life
"his social sphere is limited"; "it was a closed area of employment"; "he's out of my orbit"
area, arena, domain, field, orbit, sphere
the central area of an ancient Roman amphitheater where contests and spectacles were held; especially an area that was strewn with sand
arena
is a type of (narrower)
a particular geographical region of indefinite boundary (usually serving some special purpose or distinguished by its people or culture or geography)
"it was a mountainous area"; "Bible country"
area, country
a large structure for open-air sports or entertainments
arena, bowl, sports stadium, stadium
a playing field where sports events take place
arena, scene of action