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.
A vastly over-simplified way to describe the two cuisines is to deem Creole cuisine city food and Cajun cuisine country food. While many of the ingredients in Cajun and Creole dishes are similar, the real difference between the two styles is the people behind these famous cuisines. They say in order to really know someone, meet their family. The same goes for food. The best place to find authentic Cajun and Creole cooking is in homes across the state.