A supergiant simply is a large giant - so, it is larger (in diameter) than a "regular" giant star.
Typically,giant stars have radii between 10 and 100 solar radii and luminosities between 10 and 1,000 times that of the Sun.Whereas Supergiants have a radii between 30 and 1,000 solar radii and luminosities between 30,000 and 100,000 times that of the Sun
one is big one is small
Red giants. By the way, what if it was a white star.
The stars that are like supergiants are called "red giants" or "red supergiants".
one is big one is small
The difference is that the giant star has it's death more seriously but,The huge star is mostly not well important to the huge star.
The mass of the star.
Not exactly. Red giants become white dwarf stars. It is the red supergiants that can become supernovas.
White dwarf Main sequence star (like our sun) Red giant Supergiant
It is the mass of the main sequence star. "High mass" stars can become supergiants (not always red). If you go into more details, you will find this answer is a simplification, but it's OK for most purposes.
Either a giant or a super giant. Giants will eventually collapse on its core and have a little white dwarf left behind, but they will have the same mass and gravity as the old star. Supergiants will collapse but in an explosion, supernova, and they will either become a nuetron star or a black hole.
The five primary types of stars are the red dwarf star, yellow star, blue giant star, giant star, and super giant star. The billions of stars in the universe fall under one of these classifications.