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's population is 2,011.
Red Hat.
Red Hat's population is 2,009.
Red Hat was created in 1993.
They are occupied by Red China.
Monks
Linux is distributed as Red Hat
Red Hat Society was created in 1998.
red hat enterprise Linux is used as a server while red hat Linux is used as client..
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.
green in Tibet means worlds higheast mountain range