Freestyle is a skiing or snowboarding discipline comprising aerials, moguls, cross, half-pipe and slopestyle as part of the Winter Olympics. It can consist of a skier or snowboarder performing aerial flips and spins, and can include skiers sliding rails and boxes on their skis or snowboards.
Moguls are bumps set out on a slope - usually found on black runs and used by advanced skiers.
Freestyle ski jumping involving flipping in the air.
Park & Pipe is also under the Freestyle discipline. Visit the Park & Pipe page to find more information on the different areas of the discipline.