A nanoparticle is defined as a particle with dimensions in the range of approximately 1 to 100 nanometers (10^-9 meters). In the context of particle physics, discussions often focus on elementary particles such as electrons, protons, and quarks. The distinction between nanoparticles and elementary particles is crucial for understanding their different roles in physics. Nanoparticles have unique properties that differ from bulk materials, influencing their applications in various fields. Understanding these concepts is essential for advancements in nanotechnology and material science.