"mirror" and "looking-glass". What's the difference? Now I read "Through the looking-glass and what Alice found there" by Lewis Carrol and in this book used only word "looking-glass" and never "mirror". Also I read autobiography by Stephen Fry. He told what his school teacher was a language snob and didn't like when his students said "mirror" or 'radio', only "looking-glass" or "glass" and "wireless". What's difference between these words? Thank you.