sambuca vs liqueur

sambuca and liqueur both are nouns.

Word	Noun	Adjective	Verb	Adverb
sambuca	Yes	No	No	No
liqueur	Yes	No	No	No

As nouns, liqueur is a hypernym of sambuca; that is, liqueur is a word with a broader meaning than sambuca:

sambuca: an Italian liqueur made with elderberries and flavored with licorice
liqueur: strong highly flavored sweet liquor usually drunk after a meal

Other hypernyms of sambuca include cordial.

sambuca (noun)	liqueur (noun)
an Italian liqueur made with elderberries and flavored with licorice	strong highly flavored sweet liquor usually drunk after a meal