essence

US /ˈes.əns/
UK /ˈes.əns/
"essence" picture
1.

the intrinsic nature or indispensable quality of something, especially something abstract, which determines its character

:
The essence of his argument was that all people deserve equal rights.
Simplicity is the essence of good design.
2.

a preparation of a plant or drug, especially an alcoholic solution of a volatile oil, used as a flavoring or scent

:
Add a few drops of vanilla essence to the cake batter.
She dabbed a little lavender essence behind her ears.