Dynamic Flows

Why exactly are we using the word Corona, a crown, pertaining to the outer surface of the sun or other stars, as a word to describe a disease?

Is there a link between the two?

Here an extract about Dynamic Flows
All of the above space missions have been highly successful in observing strong plasma flows and highly dynamic processes in coronal loops. For example, SUMER observations suggest flow velocities of 5–16 km/s in the solar disk, and other joint SUMER/TRACE observations detect flows of 15–40 km/s.^[9][10]Very high velocities have been detected by the Flat Crystal Spectrometer (FCS) on board the Solar Maximum Mission, where plasma velocities were found in the range of 40–60 km/s.

Sun corona. Also the word plasma might hold the key to a possible corona cure, as related by some medical sources.