anise oil vs aniseed oil

anise oil and aniseed oil both are nouns.

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

As nouns, anise oil and aniseed oil are synonyms defined as:

anise oil and aniseed oil: an essential oil extracted from the seeds of Pimpinella anisum (aniseed), having a pungent liquorice-like smell.

Other synonyms of anise oil include oil of anise.

anise oil (noun)	aniseed oil (noun)
an essential oil extracted from the seeds of Pimpinella anisum (aniseed), having a pungent liquorice-like smell.	an essential oil extracted from the seeds of Pimpinella anisum (aniseed), having a pungent liquorice-like smell.