A wok and a frying pan are both essential cooking tools, but they differ in design, function, and usage. 
A wok is a round-bottomed cooking vessel originating from China, typically made of carbon steel or cast iron. Its high, sloping sides and wide top allow for even heat distribution and quick cooking. The shape is ideal for stir-frying, as it enables food to be tossed easily and cooked quickly at high temperatures. The wok's design also makes it versatile for steaming, deep-frying, boiling, and braising. Woks often have a single long handle or two loop handles, and they require seasoning to maintain a non-stick surface and prevent rust.
In contrast, a frying pan, also known as a skillet, has a flat bottom and lower, flared sides. It is commonly made from materials like stainless steel, non-stick coated aluminum, or cast iron. Frying pans are designed for tasks like frying, searing, and browning foods. The flat surface provides even contact with the heat source, making it suitable for cooking foods that require a stable surface, such as pancakes or eggs. Frying pans usually have a single long handle and are available in various sizes.
The primary differences lie in their shape and cooking techniques. A wok's round bottom and high sides make it ideal for high-heat, quick-cooking methods, while a frying pan's flat surface is better for even, moderate-heat cooking. The choice between the two depends on the cooking style and the type of dish being prepared.