Essential oils can be any products from herbal plans & tree who find via Hydro distill plant, CO2 Plant (Supercritical Carbon Dioxide), Solvent Extraction, Cold-Pressed etc. Its can be any Oil, Concretes, Natural Aroma Compounds, Perfumes from the Leaves, Flowers, Bark, Roots, Wood, Seeds or Peel of Herbal Plans & Tree.

On the other hand An essential oil is a concentrated, hydrophobic liquid containing volatile aromatic compounds extracted from plants. It may be produced by distillation, expression, or solvent extraction. Essential oils are used in perfumery, aromatherapy, cosmetics, incense, medicine, household cleaning products, and for flavoring food and drink. They are valuable commodities in the fragrance and food industries.

Essential oil is also known as volatile oil and ethereal oil. It may also be referred to as "oil of" the raw plant material from which it was extracted, such as oil of clove. The term essential is intended to convey that the oil is an essence of the plant it is extracted from, and not in the more common sense of being indispensable.