Electron cloud is an integral concept in chemistry and physics that refers to the distribution of electrons around an atom or molecule. There are various synonyms for "electron cloud," such as electron shell, electron density map, electron distribution, and electron orbital. The electron shell is the group of electrons that surround the atomic nucleus, whereas the electron density map represents the probability of finding an electron in a particular region around the nucleus. Electron distribution describes the arrangement of electrons in orbitals, each of which can hold a specific number of electrons. Lastly, electron orbital refers to the region around the nucleus where an electron is most likely to be found. These synonyms offer different perspectives on understanding electron clouds and their behavior in chemical and physical processes.