volatile oil vs essential oil

volatile oil and essential oil both are nouns.

Word	Noun	Adjective	Verb	Adverb
volatile oil	Yes	No	No	No
essential oil	Yes	No	No	No

As nouns, volatile oil and essential oil are synonyms defined as:

volatile oil and essential oil: an oil having the odor or flavor of the plant from which it comes; used in perfume and flavorings

volatile oil (noun)	essential oil (noun)
an oil having the odor or flavor of the plant from which it comes; used in perfume and flavorings	an oil having the odor or flavor of the plant from which it comes; used in perfume and flavorings