One very common type of hat is a fitted cap, usually with some sort of symbol or sports team; sometimes a work logo.
Yes, "top hat" is a common noun. It refers to a specific type of formal hat without designating a particular brand or individual item. Common nouns are general names for a class of objects or concepts, as opposed to proper nouns, which name specific entities. In this case, "top hat" describes a type of hat rather than identifying a unique item.
A white one
A winged one.
A hard one
The color black for a hat is and will always be the most popular hat for men.
type of hat worn by witches
depends on the type, e.g. yes if its a baseball hat or stocking type... no if it s a complex elaborated one often hold with hairpins etc
NO!!! 'Hat' is a concrete common noun, because it is an object you can hold .
Raccoon hat
fedora hat
· derby hat
yes