anise oil vs volatile oil

anise oil and volatile oil both are nouns.

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

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

anise oil: an essential oil extracted from the seeds of Pimpinella anisum (aniseed), having a pungent liquorice-like smell.
volatile oil: an oil having the odor or flavor of the plant from which it comes; used in perfume and flavorings

Other hypernyms of anise oil include essential oil.

anise oil (noun)	volatile oil (noun)
an essential oil extracted from the seeds of Pimpinella anisum (aniseed), having a pungent liquorice-like smell.	an oil having the odor or flavor of the plant from which it comes; used in perfume and flavorings