What words do you mean?
Probably yes ... I am surprised, I thought we took this word from the old Slavs.
Bannerlord uses Gloss (inverted roughness) as part of the specular, which stacks Metallic in the red channel, Gloss in the green channel and Ambient Occlusion in the blue channel for PBR materials.
If you look at them in the Texture Inspector, you'll see that they only have information in the red and green channels. I believe the blue channel data can be calculated from the red and green channels at run time, allowing Taleworlds to optimise the storage requirements for normal maps. However, I'm no expert in these matters and could be wrong.
As she didn't update the downloadable executable here's a version built from her master: http://www.mediafire.com/file/gi12qn2wnitvpna/TpacTool_081020.zip/file