Describing the nature of the universe is a complex task, but I can provide some insights. In our current understanding of physics, it is not accurate to say that the universe is fundamentally made up of either particles or waves alone. Both particles and waves are important concepts in physics, and they are interconnected in various ways.
According to quantum mechanics, which is the foundation of our understanding of the microscopic world, particles such as electrons and quarks can exhibit wave-like behavior. This is known as wave-particle duality. In certain experiments, these particles can exhibit properties of both particles and waves, depending on how they are observed or measured.
The Standard Model of particle physics, which is a widely accepted theory, describes the fundamental particles and their interactions. It encompasses both particles and waves. The particles in the Standard Model are treated as point-like entities, but their behavior is described using quantum field theory, which incorporates the wave-like nature of particles.
Quantum physics, on the other hand, is a broader framework that encompasses various theories and principles, including quantum mechanics. While quantum mechanics is indeed a part of quantum physics, the latter extends beyond just the study of waves. It encompasses a wide range of phenomena and concepts, such as superposition, entanglement, and quantum information theory, which go beyond the scope of classical physics.
In summary, it is not accurate to categorize the universe as fundamentally particles or waves alone. The nature of the universe is best understood through a combination of particles and waves, as described by the theories of quantum mechanics and the Standard Model.