Answer:The main difference between a water bottle and a pitcher is their size and purpose. A water bottle is typically portable, with a narrower opening and is designed to hold a small amount of liquid for personal use. A pitcher, on the other hand, is usually larger and has a wider opening, making it ideal for communal use and dispensing liquids such as water, juice, or milk. Additionally, a water bottle is usually made of a durable plastic material, while a pitcher can be made of a variety of materials such as glass, ceramic or stainless steel.