Thu'um is not a school of magic; it's actually a way of manipulating the properties of the Elder Scrolls universe (or the Aurbis). The properties of the Aurbis are made of a song (an idea taken from Tolkein), and to use a shout is to insert notes into this song, causing the universe to be temporarily manipulated, which can be used to do anything from creating mini cyclone (ven gaar nos) to creating an artificial force which throws enemies back (fus ro dah) to putting one into an ghost-like state where they cannot be harmed (feim zii gron). Magic specifically refers to harnessing magicka and using it as energy to do things like firing flames out of one's hand. Other than that, the quiz was great!