Hat

Shaped head covering, having a brim and a crown, or one of these

A hat is a head covering which is worn for various reasons, including protection against weather conditions, ceremonial reasons such as university graduation, religious reasons, safety, or as a fashion accessory. Hats which incorporate mechanical features, such as visors, spikes, flaps, braces or beer holders shade into the broader category of headgear.

This keyword could refer to multiple things. Here are some suggestions: