Define and differentiate between menorrhagia and metrorrhagia, detailing at least two characteristics for each.

Menorrhagia is a type of abnormal uterine bleeding characterized by excessively heavy or prolonged menstrual bleeding.

• Characteristic 1: Heavy menstrual bleeding, often soaking through pads or tampons every hour for several consecutive hours.
• Characteristic 2: Prolonged bleeding duration, typically lasting more than 7 days.

Metrorrhagia is a type of abnormal uterine bleeding characterized by irregular bleeding or spotting between menstrual periods.

• Characteristic 1: Bleeding occurs at irregular intervals and is not associated with the expected menstrual cycle.
• Characteristic 2: The amount of bleeding can vary, from light spotting to heavier flow, and is often unpredictable.