The term "family film" is essentially an American expression while ”children's film" is considered to be a European expression. However, the difference between the two terms can be seen in casting methods adopted by American and European films respectively. In American family films, the search for a child protagonist involves casting children that meet a specific criterion or standard for physical appearance. In contrast, European children's films look to cast children who appear "ordinary".Because of these differences, American family films are more easily marketable toward domestic and international viewing audiences while European children's films are better received domestically with limited appeal to international audiences.