absinthe oil vs essential oil

absinthe oil and essential oil both are nouns.

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

As nouns, essential oil is a hypernym of absinthe oil; that is, essential oil is a word with a broader meaning than absinthe oil:

absinthe oil: a dark bitter oil obtained from wormwood leaves; flavors absinthe liqueurs
essential oil: an oil having the odor or flavor of the plant from which it comes; used in perfume and flavorings

Other hypernyms of absinthe oil include volatile oil.

absinthe oil (noun)	essential oil (noun)
a dark bitter oil obtained from wormwood leaves; flavors absinthe liqueurs	an oil having the odor or flavor of the plant from which it comes; used in perfume and flavorings