I don't think there is a very precise definition; the basic idea is that giant stars usually have several times the diameter of our Sun.
giant
When compared to the other stars, the Red Giant Star are very minute. There are other stars that are very large by far as compared to the Red giant stars.
Giant Dwarves are old stars.
Giant stars are commonly referred to as "giant" stars because of their large size compared to main sequence stars like the Sun. These stars are in a later stage of their evolution and have expanded in size due to the depletion of their core's hydrogen fuel.
An average giant galaxy contains a trillion or more stars.
The five main groups of stars are main sequence stars, giant stars, supergiant stars, white dwarf stars, and neutron stars. These groups are classified based on their size, temperature, and stage in their life cycle.
betelgeuse
Plasma And Gas Like Regular Stars
There are many giant stars. Some of the most well known are:AlcyoneThubanOctantisAurigaeCapellaArcturusMira
Small stars live longer
In the constellation Capricornus, there are a few notable giant stars, including Delta Capricorni, which is a well-known giant star in the region. However, the total number of giant stars in Capricornus is relatively low compared to other constellations. The exact number can vary based on the criteria for classification, but typically, at least two or three prominent giant stars are recognized within this constellation.
Stars in their giant and supergiant stages are located in the top right portion of the Hertzsprung-Russell diagram, also known as the "red giant branch." These stars are characterized by being large and cool compared to main sequence stars, and they represent later stages in stellar evolution.