| System | Transition | Order Parameter |
| Liquid-gas | Condensation/evaporation | Density difference \( \Delta\rho=\rho_{liquid}-\rho_{gas} \) |
| Binary liquid | mixture/Unmixing | Composition difference |
| Quantum liquid | Normal fluid/superfluid | \( < \phi> \), \( \psi \) = wavefunction |
| Liquid-solid | Melting/crystallisation | Reciprocal lattice vector |
| Magnetic solid | Ferromagnetic | Spontaneous magnetisation \( M \) |
| Antiferromagnetic | Sublattice magnetisation \( M \) | |
| Dielectric solid | Ferroelectric | Polarization \( P \) |
| Antiferroelectric | Sublattice polarisation \( P \) |