It is a Yarmulka in Yiddish. However, it is most often called a kippa, which is Hebrew. It is worn as a reminder that Hashem is above you at all times.
It is called a Kippah or a Yarmulke and is a small cloth skull cap
Toque
Petasus
Mexican Sombrero
Coppola...
it is traditional
Pava.
The name of the hat with a flat top worn at graduation ceremonies is called a mortarboard.
The hat worn by the Queen's Guard is called a bearskin hat. It is made of real bearskin and is part of the ceremonial uniform worn by the guards when on duty at royal palaces.
The hat they wear is called a fedora.
A bowler hat too small for him. (All his clothes were meant to be the wrong size, to symbolise anarchy.)
the golden cap
Fadora