Hi Carol,
Rattan is a vine that grows in the tropical forest of the Far East and it is one of nature’s strongest matericals and is used for making furniture.
Wicker refer to products that are made from reed, cane, rush, willow and are woven to make wicker. there is a site that explains it better than me. http://www.rattanland.com and even shows you pictures. Hope that helps you out. Noelene