A pulsar is a highly magnetized, rotating neutron star that emits electromagnetic radiation at a regular interval. Synonyms for pulsar include neutron star, rapidly rotating neutron star, pulsating star, and rotating magnetized neutron star. These terms describe the same astronomical object in slightly different ways. Neutron star emphasizes the object's composition, while rapidly rotating neutron star emphasizes the object's rotation. Pulsating star focuses on the periodic emission of radiation, and rotating magnetized neutron star highlights the object's magnetic field. Regardless of the terminology used, pulsars are fascinating objects that help scientists better understand the universe and its properties.