Hi I am having toruble differentiating between the two. below the curie temperature BaTiO3 behaves as a ferroelectric, the Ti ions are offset from the centre, causing a polar domain. But it has a net polarisation is zero. Now above the curie temperature all the dipole cancel each other out so it also has a net oikarisation of zero. So what is the difference in terms of orientation of domains/structure? Are they both unordered since they both have net polarisations of zero?