Subshell is a term used in chemistry and atomic physics to describe the distinct energy levels or orbitals within an atom's electron shell. Synonyms for the word subshell include energy level, electron orbital, atomic sublevel, electron shell, atomic shell, and electronic configuration. Each of these terms refers to the arrangement of electrons within an atom and describes the various states that an electron can occupy within an atom's energy structure. Scientists use these terms interchangeably to describe the behavior and properties of atoms and their constituent particles. Understanding the various synonyms for subshell can help students and researchers better understand the complex world of atomic physics and electron configuration.