What is the meaning of Essence?

The inherent nature of a thing or idea.

The true nature of anything, not accidental or illusory.

Constituent substance.

A being; especially, a purely spiritual being.

A significant feature of something.

The concentrated form of a plant or drug obtained through a distillation process.

An extract or concentrate obtained from a plant or other matter used for flavouring, or as a restorative.

Fragrance, a perfume.

essence

petrol, gasoline

essence, essential oil

Source: wiktionary.org