Been searching, can't find straight answer

Quck question when people talk about using softboxes in their scene, what exactly are we talking about? A regular corona light in the scene or? And if so does it require any specific settings?
Kind Regards

Where did you see this?

Soft boxes are used in photography.

They’re usually rectangular or square and emit a soft light, which has the effect of flattening highlights.

In CG terms, it’s basically an area light.

Does anyone know if the vray softbox map works with standard corona lights?
I have been trying, but i can’t seem to get them to work lol