essence
noun.
the choicest or most essential or most vital part of some idea or experience
the gist of the prosecutor's argument|the heart and soul of the Republican Party|the nub of the story
noun.
any substance possessing to a high degree the predominant properties of a plant or drug or other natural product from which it is extracted
noun.
the central meaning or theme of a speech or literary work
Synonym: burden, core, effect, gist
noun.
a toiletry that emits and diffuses a fragrant odor
Synonym: perfume