aniseed vs anise seed

aniseed and anise seed both are nouns.

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

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

aniseed and anise seed: liquorice-flavored seeds, used medicinally and in cooking and liquors

Other synonyms of aniseed include anise.

aniseed (noun)	anise seed (noun)
liquorice-flavored seeds, used medicinally and in cooking and liquors	liquorice-flavored seeds, used medicinally and in cooking and liquors