Giants and super giants are considered stages in the life cycle of a star.
Giants or supergiants
Supergiants are bigger and more luminous than the red giants. Supergiants are stars that have a mass that is eight times more than the sun.
The stars that are like supergiants are called "red giants" or "red supergiants".
Basically, all stars that aren't "giants", "supergiants", or "hypergiants" are considered dwarf stars. This means that all stars on the main sequence are dwarfs.
Red giants, red supergiants.
White Dwarfs, Supergiants, and Red Giants are stars that are found in the sky.
They could be Blue Giants, or Red Giants, or Red Supergiants.
Yes, there are. The classic red giants that come from sun- like stars, and red supergiants come from blue giants.
According to Wikipedia giants have absolute magnitudes around 0 to -1 while supergiants have absolute magnitudes around -5 so they are 50-100 times brighter (5 magnitudes difference equals 100 times brighter).
The three extra groups on the H-R diagram are white dwarfs, red giants, and supergiants. These groups represent stars in different stages of their evolution based on their luminosity and temperature. White dwarfs are small, hot stars near the end of their life cycle, red giants are large, cool stars in the later stages of their life cycle, and supergiants are massive, luminous stars.
In the usual position of the axes, the upper-right is populated by giants and supergiants.
No. Only massive stars can become supergiants.