The term "electron emission" refers to the release or discharge of electrons from atoms or materials. Alternative synonyms to describe this phenomenon include "electron discharge," "electron liberation," and "electron emission process." Additionally, "photoelectric effect" is another related term that describes the phenomenon of electron emission that occurs when light energy is absorbed by a material, causing electrons to be released. In some contexts, "cathode rays" may also be used to describe electron emission. Overall, synonyms for electron emission help to provide more nuanced descriptions of the physical processes and mechanisms involved in electron release.