The quantum vacuum, what you have when you remove everything removable, seethes with virtual particles, a space of pure possibilities made physical: the field is not a stage on which events occur but the medium through which they feel each other.
The quantum field seethes with potential. The event is what the field does.
The quantum vacuum, the ground state, what you have when you remove everything removable, is not empty. It seethes with virtual particles flickering in and out of existence.

Where the quantum field provides the medium of possibility, thermodynamics provides the mechanism of order. Ilya Prigogine showed that systems far from equilibrium can spontaneously generate and maintain complex patterns, sustained by a continuous flow of energy through them: dissipative structures[prigogine]. A candle flame, a hurricane, a living cell (see The Cell That Makes Itself) are all dissipative structures: events the field sustains by feeding them order from elsewhere.