A gorget, collar, and patch are distinct elements that can be found in various contexts, including military uniforms, armor, and jewelry.

Gorget:

Historically, a gorget was a piece of armor designed to protect the throat and neck. It was often a metal or leather collar worn by soldiers to provide additional protection to the vulnerable area around the neck.

In modern usage, the term can refer to a type of ceremonial neckpiece or a protective piece of clothing (often worn by fencers or in certain sports) that covers the throat area.

Collar:

A collar is a band of material (fabric, metal, leather, etc.) worn around the neck. It's a common feature in clothing and uniforms, and it can serve various purposes.

In military uniforms, a collar might bear specific insignia, rank markings, or unit identifiers. For example, an officer's collar might have different markings than an enlisted person's.

Patch:

A patch is a piece of fabric, often embroidered or otherwise decorated, that is attached to a garment (like a uniform) or other material. Patches can serve a variety of purposes:

Identification: In military contexts, patches can display unit insignia, rank, or other information about the wearer.

Decoration: Patches can be purely decorative, featuring images, logos, or other designs.

Mending: Patches are sometimes used to cover holes or reinforce areas of a garment that have worn thin.

If you're referring to a specific term or item like a "gorget collar patch" in a particular context (for instance, a specialized military insignia or a specific type of accessory), please provide more information, and I'll do my best to provide relevant details.