https://www.merriam-webster.com/dictionary/liqueur

> a usually sweetened alcoholic liquor (such as brandy) flavored with fruit, spices, nuts, herbs, or seeds

vs liquor

https://www.merriam-webster.com/dictionary/liquor

> a usually distilled rather than fermented alcoholic beverage

see https://www.merriam-webster.com/dictionary/amaretto

> an almond-flavored liqueur

and https://en.wikipedia.org/wiki/Limoncello

> Limoncello (Italian pronunciation: [limonˈtʃɛlːo]) is an Italian lemon liqueur mainly produced in Southern Italy