The leaves of the anise plant can be used as an herb. The seeds of the anise plant, called aniseed or anise seeds, are used as a spice, either ground or whole. Aniseed is used in a various baked goods and desserts, for example Italian biscotti. Anise seeds are frequently used in making sausage.
Anise seeds are the basis for a number of alcoholic beverages, including absinthe, anisette, ouzo and sambuca.
Despite its similar name, anise is not related to star anise, which is another spice from a different family of plants.
Also see: Quiz: Is it an Herb or a Spice?