Phenols are organic compounds that are characterized by the presence of one or more hydroxyl (-OH) groups attached to an aromatic ring. They are widely used in the manufacture of plastics, pharmaceuticals, and other industrial products. There are several synonyms for phenols, including phenolics, oxyhydroxybenzenes, hydroxybenzenes, and phenylic acids. Phenyls are another class of organic compounds that are closely related to phenols. Although phenyls lack the hydroxyl group found in phenols, they share a similar chemical structure and are commonly used in the production of dyes, fragrances, and other products. Understanding the synonyms for phenols is important when working in industries that rely on these organic compounds.