star aniseed vs star anise

star aniseed and star anise both are nouns.

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

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

star aniseed and star anise: anise-scented star-shaped fruit or seed used in Asian cooking and medicine

Other synonyms of star aniseed include Chinese anise.

star aniseed (noun)	star anise (noun)
anise-scented star-shaped fruit or seed used in Asian cooking and medicine	anise-scented star-shaped fruit or seed used in Asian cooking and medicine
	small tree of China and Vietnam bearing anise-scented star-shaped fruit used in food and medicinally as a carminative
	small shrubby tree of Japan and Taiwan; flowers are not fragrant