Quantum Mechanics: Particle or Wave

The wave–particle duality is a concept in quantum mechanics that states that the fundamental entities of the universe, such as photons and electrons, exhibit either particle-like or wave-like properties depending on experimental conditions. In the early twentieth century, it was discovered that light behaves as a wave, and later it was found to display particle-like behavior. Meanwhile, electrons, which initially appeared to act as particles in early experiments, were later shown to exhibit wave-like properties. What single identity can be conceived for matter?