Linked from
The 16 pages that link to Free energy, each with the reason it gives.
EntropyRelated: Free-energy changes combine energy and entropy to predict process favorability.
NucleationNarrower topic: The free-energy change with cluster size sets the nucleation barrier.
WettingNarrower topic: Equilibrium wetting minimizes the relevant free energy of the interfaces.
Order parameterRelated: The stable order parameter minimizes the appropriate free energy.
PhaseNarrower topic: Stable phases minimize the appropriate free energy under their conditions.