Am always so confused.
EDIT: It has been suggested by wishwords and katiethewriter that "medi-witch" is a canon term, and I must say I agree. Now--to find reference in the books. :D
EDIT 2: katiethewriter and her lovah Jeff are the Huffly Huffles of My Heart today: "'It's a time-out!" yelled Bagman's voice, 'as trained mediwizards hurry onto the field to examine Aidan Lynch!'" (Goblet of Fire, American edition, page 108)