In Tibet, a red hat typically signifies the Gelug school of Tibetan Buddhism, also known as the Yellow Hat sect. The red hat is worn by certain monks and lamas, particularly those in higher positions, and symbolizes their commitment to the teachings and practices of this tradition. The color distinction helps differentiate between the various Buddhist sects in Tibet, with the Gelug school being founded by Tsongkhapa in the 14th century.
I think you mean what is an adjective. Adjective modify noun. For example, I have red hat, red is adjective. Adjective can be found in many form but always modifying a noun like a red hat, hat being noun and red being adjective modifying color of the hat.
Red Hat.
Red Hat's population is 2,009.
Red Hat's population is 2,011.
Red Hat was created in 1993.
They are occupied by Red China.
Monks
Red Hat Linux was discontinued in 2003, and replaced with "Red Hat Enterprise Linux", and the free, home-use version "Fedora". Updates were discontinued for Red Hat after 2006.
red hat enterprise Linux is used as a server while red hat Linux is used as client..
Red Hat Society was created in 1998.
Linux is distributed as Red Hat
Gold was an officer, red was artillery.