Volatile oil, also known as essential oil, is a concentrated liquid derived from plants that contains volatile aromatic compounds responsible for their characteristic scent and flavor. Synonyms for volatile oil include essential oil, ethereal oil, aromatic oil, and volatile essence. Essential oils are used for various purposes, including aromatherapy, personal care products, and culinary applications. Ethereal oil is another synonym used to refer to essential oil, and it is derived from the Latin word ethereus, meaning "heavenly" or "of the upper air." Aromatic oil is a term used to describe any oil containing volatile aromatic compounds, while volatile essence refers to a highly concentrated form of essential oil.