Since the Moon doesn't orbit around the earth in a perfect circle, there are times when it's slightly closer - making it appear larger. Therefore, a Supermoon, is a full moon or new moon that occurs when it's closest to the Earth on its elliptical orbit. According to NASA, the moon may appear 30% brighter and 14% larger resulting in a larger lunar disk when viewed from the Earth. This is also known as Perigee within the Earth-Moon-Sun system.
A Lunar Eclipse, occurs when the moon passes into the Earth's shadow. This means the Earth comes in between the moon and the sun. Lunar Eclipses give the moon a reddish/orange color for the duration of the eclipse.