essence vs patchouli

essence and patchouli both are nouns.

Word	Noun	Adjective	Verb	Adverb
essence	Yes	No	No	No
patchouli	Yes	No	No	No

As nouns, patchouli is a hyponym of essence; that is, patchouli is a word with a more specific, narrower meaning than essence:

essence (noun)	patchouli (noun)
a toiletry that emits and diffuses a fragrant odor	a heavy perfume made from the patchouli plant
the choicest or most essential or most vital part of some idea or experience	small East Indian shrubby mint; fragrant oil from its leaves is used in perfumes
the central meaning or theme of a speech or literary work
any substance possessing to a high degree the predominant properties of a plant or drug or other natural product from which it is extracted