The technical description of lighting apparati has descended into jargon in the USA (where they call such Light Fixtures) and Brittain (where they are called Light Fittings).
In addition, it is assumed by many that if you want light, you must screw a "light bulb" into a socket. But even that becomes confused because not all light sources have bulbs of glass around a filament, or a tube of glass to hold gases that exhibit fluorescence. And then the word "lamp" is common slang for an all-in-one luminary unit or portable light fixture.
This nomenclature mish-mash becomes even more strained when you consider LEDs (light emitting diodes) that are often chips of semiconductor materials encased in ceramics.
We really should go back to a correct terminology. You should find LEDs in the more advanced luminaires available in today's markets. They may shine their light from spots, from surfaces, in linear strings, or in any other configuration you may desire. They are not limited to bulbs or tubes. They need not be in fixtures or fittings. It is time they become an integral part of the environment.
I suggest the LED suppliers get on board. Identify apparati with LEDs as luminaires.