It sounds like you’re referring to clam chowder, which is indeed a thick and chunky soup often made with clams. However, if you’re looking for a corn-based soup, you might be thinking of corn chowder.
Corn chowder is a creamy soup made with corn, potatoes, and often includes ingredients like onions, celery, and sometimes bacon or other proteins for flavor. It's thickened with a base of milk or cream, and can be garnished with fresh herbs or additional vegetables.
Would you like a specific recipe for corn chowder or more information on similar soups?