Starfox
Hero
In both D&D and Pendragon, glamor is a technical term.
The technical term in 3E/Pathfinder is "glamer". Similar, but I feel they specifically avoided the term "glamor" or "glamour" to create a technical term, one they could define themselves, without common-usage preconceptions. The 3E glamer is a subset of illusion, just as illusion is a subset of the glamor I was speaking of. Glamer clearly much more narrowly defined than glamor.
glamer ⊂ illusion ⊂ glamor
Still, I do bye your argument - the meaning of these words are given by their setting, as are all technical terms and really all words. What I was doing was just a reminder that glamor can be more than just illusion.