Gumbo is a soup that is a combination of many different ingredients.
It can be made with seafood, chicken, sausage, vegetarian, or a combination of all of these. That's what New Orleans food is all about. Over the years we have assimilated the best aspects of French, Spanish, African, Carribbean, Central American, Chinese, Vietnamese, etc., cuisine and blended it into a gumbo that is uniquely New Orleans. Gumbo is Creole. So is Oysters Bienville.