On the model of Halliday's Systemic Functional Linguistic Theory, the wave-particle duality of light (and electrons) can be understood in terms of instantiation, with wave as potential, and particle as instance.
For example, in the 'double slit' experiment, the wave model of light provides the potential locations of a photon, quantified in terms of probability, while the particle model provides the actual locations of photons, quantified in terms of frequency.
The interference patterns on the detector sheet are the frequencies of actual photons, in accord with the probabilities of potential photons. In the 'single slit' experiment, all photons are detected in the one most probable location, beyond the single slit. In the 'double slit' experiment, actual photons are detected in frequencies that reflect the interacting waves of probability that quantify the potential of the system.
Wave crests of light measure the most probable location of a photon, and wavelength is the spatial distance between the two most probable locations in a train of photons. Frequency is the number of probability peaks per time interval. Different probability peak frequencies are construed as different colours, within the visible spectrum.
Without the distinction between potential and actual, wave-particle duality leads physicists to mistake potential states of Schrödinger's cat for actual states (alive and/or dead) and potential universes for actual universes.