yes before it dies it becomes a red giant
No, red giants are generally older than main sequence stars, as red giants have no hydrogen left for fuel, and burn helium instead. where as Main Sequence stars burn hydrogen for fuel.
With red giants and main sequence stars they are not entirely featureless, therefore there is no name for them.
Main sequence star: hydrogen-1. Red giants: helium-4.
Main sequence star: hydrogen-1. Red giants: helium-4.
The four types of stars are; Main Sequence, White Swarfs, Red Giants and Super Giants. 90% of stars are in the Main Sequence.
Red Giants. Stars not on the main sequence
above the main-sequence stars
Red Giants - although they can be branch main sequence for a while.Brown DwarfsBlack dwarfsWhite dwarfsT-Tauri starsProtostarsNeutron starsPre-main sequence stars (PMS stars)
Red giants are a later stadium of main sequence stars, there is no relation between distance and position in the Hertzsprung Russell diagram.
Main sequence star: hydrogen-1. Red giants: helium-4.
If they have red stars including giants in, they can't be all that featureless.
Red giants, red supergiants and red hypergiants.