Baffled by Baffles

Is it a baffle or a diffuser?

Being my pedantic self again here. And maybe this use of the term baffle has been going on for a long time and I've just ignored it. But recently I have seen a lot of photography sites using the terms baffle and diffuser interchangeably. I see references to the "inner baffle" on a softbox (try this Google search on softbox baffle). One ad mentions a "white diffusive baffle." This isn't just photographers writing about light, it is also in the descriptions of modifiers on the websites of lighting companies.

Let's start with the dictionary and the definitions of baffle and diffuser...

Baffle 
noun
a device used to restrain the flow of a fluid, gas, or loose material or to prevent the spreading of sound or light in a particular direction.

Diffuser
noun
a device that spreads the light from a light source evenly

From the definitions, these seem to be opposites. A baffle would be more akin to a grid on a light that restricts the light to make it more directional and prevents the light from spreading out. The inner translucent panel in a softbox is diffusing the light and spreading it out and trying to avoid having a directional hot spot. The outer diffuser does the same thing. And some photographers put multiple diffusers over the outside of their softbox/octa/softlighter. None of these things are acting as a baffle in my mind.

 Diffuser vs Baffle

Diffuser vs Baffle

Am I just the old curmudgeon who can't get with the new terminology? Or should we be more precise in our descriptions?