blackthorn liqueur vs liqueur

blackthorn liqueur and liqueur both are nouns.

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

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

blackthorn liqueur: any of a variety of strong alcoholic drinks made from blackthorn fruit.
liqueur: strong highly flavored sweet liquor usually drunk after a meal

Other hypernyms of blackthorn liqueur include cordial.

blackthorn liqueur (noun)	liqueur (noun)
any of a variety of strong alcoholic drinks made from blackthorn fruit.	strong highly flavored sweet liquor usually drunk after a meal