"Charm... Charm...", Janet thought. She was a muggleborn, which means she knows way less than her other friends. In the muggle world, a charm is some sort of magic ( "It's actually true", she thought ) or miracle. Maybe. She wasn't sure. All the other students answered so surely and quickly, but she tried to answer.

"Professor, I think a charm is like an incantation, a spell. it includes transfigurations and others", she answered. She had her fingers crossed, hoping that it's correct.