esfera

noun
  1. A three-dimensional geometric shape that is perfectly round, like a ball, with all points on its surface equidistant from its center. noun
    The Earth is often described as an esfera, though it is slightly flattened at the poles.
    The artist sculpted a perfect esfera out of marble.
  2. A field or domain of activity, interest, or expertise. noun
    She has made significant contributions in the esfera of environmental science.
    His influence extends beyond the political esfera into cultural and social realms.