The Corona is a still more distant, hotter region. The corona stretches throughout the solar system, the solar wind is considered to be part of the corona. Prominences are huge loops of hydrogen gas thrown upwards by magnetic forces. Can hover above the sun for weeks or even months. Associated with sunspots.
Flares are violent explosions of hot material occurring in regions around sunspots.
It is flares that cause disruptions here on earth. End chapter 11.