Answer Wiki. Wikipedia has a fairly good summary - Modern art - defining it broadly as art from much of the second half of the 19th century through nearly 3/4 of the 20th. There's also a piece on Modernism in the arts from the mid-19th century through the present.
Another major difference that can be seen between Cajun and Creole is in their foods. The food of Creole is Afro-European with some French flair. On the other hand, Cajun foods have a French influence. One can also see that the two sects of people practise and love different music.
Like the people, Creole food is a blend of the various cultures of New Orleans including Italian, Spanish, African, German, Caribbean, Native American, and Portuguese, to name a few. Creole cuisine is thought of as a little higher brow or aristocratic compare to Cajun. Traditionally, slaves in the kitchens of well-to-do members of society prepared the food. Due to the abundance of time and resources, the dishes consisted of an array of spices from various regions and creamy soups and sauces.