a hat
The correct name for the graduation hat is a mortarboard.
The hat students wear at their graduation ceremony is called a mortarboard. It is considered a symbol of academic achievement and is traditionally worn during the graduation procession and ceremony.
cap and gown. the hat is called a mortarboard.
Mortarboard
The name of the hat with a flat top worn at graduation ceremonies is called a mortarboard.
in the library
Sally's brother's name in The Cat in the Hat is Conrad.
list of post graduation courses
You can get a variety of Sterling Silver and Silver Graduation Necklaces.These have a scroll and the mortarboard hat graduates wear.
It was a stovepipe type but I don't think he had a pet name for it although someone will correct me if I'm wrong.
Pinterest, Quill and Zazzle are all great companies to check out to gather graduation ideas. It is possible to customize your own graduation hat and order it online as well.
That is the correct spelling of the noun "hat" (worn on the head).
That is the correct spelling of "top hat" (short version of stovepipe hat).