Bose-Einstein condensation is a phenomenon of quantum mechanics that occurs when a gas of bosons (particles with integer spin) is cooled to extremely low temperatures. It is characterized by the formation of a macroscopic collection of particles, in which all the particles occupy the same quantum state. This state is known as the condensate. There are several synonyms for Bose-Einstein condensation, including Bose condensation, molecular condensation, and macroscopic quantum phenomena. Other related terms include superfluidity, superconductivity, and quantum degeneracy. These words describe the same underlying physical phenomena, which involve the behavior of particles at extremely low temperatures and in high-density environments. Bose-Einstein condensation has important applications in fields like physics, chemistry, and material science, and is actively being studied by researchers around the world.