blueberry liqueur vs liqueur

blueberry liqueur and liqueur both are nouns.

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

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

blueberry liqueur: liqueur infused with blueberries, blueberry juice, or blueberry flavoring.
liqueur: strong highly flavored sweet liquor usually drunk after a meal

Other hypernyms of blueberry liqueur include cordial.

blueberry liqueur (noun)	liqueur (noun)
liqueur infused with blueberries, blueberry juice, or blueberry flavoring.	strong highly flavored sweet liquor usually drunk after a meal