Soup and bisque may both be liquid dishes, but they differ in essence and preparation. Soup is a versatile comfort food made with a variety of ingredients, while bisque is a seafood lover's dream, often made with crustacean shells for a creamy, luxurious texture. Soup has diverse textures, from chunky to pureed, while bisque is silky-smooth. Soup is hearty and complex in flavor, while bisque focuses on a few key elements and aims to highlight the main ingredient. Understanding the differences between soup and bisque allows for a deeper appreciation of each dish.