Juxtaposition and apposition

The juxtaposition is distinguished from the apposition because while the elements of the first are coordinal, the elements related by apposition are not. Furthermore, the elements of the apposition are always correct and those of the juxtaposition do not have to be:

Felipe, Cristina, Elena should have the same rights (juxtaposition).

Felipe, Prince of Asturias, has recently married (apposition).