Luminaire, light fixture or light fitting

All three terms "luminaire, light fixture, and light fitting" refer to essentially the same thing: an electrical device used to create artificial light in indoor or outdoor spaces. These terms are often used interchangeably, but there might be some slight variations in their usage based on regional preferences or specific contexts.

• Luminaire: This is a more technical term often used in the lighting industry and in architectural and engineering discussions. A luminaire encompasses the entire lighting unit, including the light source (such as a bulb or LED), any necessary control devices (like dimmers or switches), and the housing or casing that protects and distributes the light. In other words, a luminaire is the complete lighting system.
• Light Fixture: This is a more common term used in everyday language to describe a device that holds and distributes light. It usually refers to the physical housing or structure that contains the light source and other necessary components. Light fixtures can come in various shapes, sizes, and designs to suit different purposes and aesthetics.
• Light Fitting: This term is more commonly used in British English and other parts of the world, such as Australia and New Zealand. It also refers to the device or equipment that holds and distributes light. Like "light fixture," a "light fitting" refers to the entire assembly that includes the light source and the housing.

In summary, while there might be nuanced differences in how these terms are used in various contexts, they generally refer to the same concept: the equipment used to produce artificial light in indoor or outdoor settings.