At the University of Reading in 2000 we never referred to Capital as Uppercase and small letters to lowercase.
The terms are incorrect and referred to typecases and the placements of the metal slugs.
Capitals is the correct term referring to there Roman roots. And small letters is the only real term for those little versions of the original Capitals.
Now we need to know are they Figures (figgers: UK English) or Numerals?
It would be interesting to know what the non-english terms are for Capital letters and small letters?