Electrophilic aromatic substitution is a chemical reaction where an electrophile is attracted to an aromatic compound. It is also known as EAS, aromatic electrophilic substitution, and aromatic nucleophilic substitution. In addition, it is sometimes called "aromatic substitution" or simply "substitution reaction." Other terms used to describe this reaction include Friedel-Crafts reaction, Sandmeyer reaction, and Balz-Schiemann reaction. Furthermore, electrophilic aromatic substitution is a key mechanism for synthesizing many important organic compounds, including pharmaceuticals, dyes, and fragrances. Understanding the different synonyms for this reaction is important for proper communication in the scientific community.