
Apricot brandy liqueur is a sweetened fruit liqueur flavored with apricot flesh and kernels, not a distilled apricot spirit despite the word "brandy" in its name.
As a background accent another apricot-forward sweetener stands in, rebalanced with sugar syrup and a little strength. Where the apricot is the point, nothing reconstructs it from a different fruit.
Apricot eau-de-vie / distilled apricot brandy (fruit spirit)
A dry, unsweetened distillate against a sweetened low-strength infusion. They share the words "apricot brandy" on the label, so a recipe written for one comes out either cloying or bone dry with the other.
US flavored brandy (apricot flavored brandy)
A US labeling class rather than a kind of fruit spirit: a brandy base with apricot flavoring added, sugar permitted and a 30% ABV minimum. It is sweeter and thinner than a steeped liqueur, so the drink needs its syrup cut and the aroma reads candied.
Creme de noyau/noyaux
Crème de noyau is built on stone-fruit kernels rather than the flesh — a different part of the same fruit. It tastes of almond where this tastes of apricot, so a drink swapped over reads like marzipan.
The base varies more than the label suggests: some houses macerate the fruit in neutral spirit, others in grape brandy, and the second tastes noticeably rounder at the same sweetness.
The brandy base gives it more staying power than a neutral-spirit fruit liqueur. Apricot is a robust fruit note to begin with. Keep it closed on an ordinary shelf and it will be recognizable for years.

Northern Sunset
Dry sparkling wine

Angel Face
London dry gin, Apricot brandy liqueur, Calvados

Charlie Chaplin
Apricot brandy liqueur, Sloe gin

New York Stone Sour
Bourbon

Peach and Apricot Spritz
Prosecco extra dry, Peach schnapps, Apricot brandy liqueur

Stone Sour
Bourbon

Apricot Julep
Bourbon

Apricot Stone Sour
Apricot brandy liqueur

Dot (1937 recipe)
London dry gin

Fifth Avenue Shot
Brown crème de cacao, Apricot brandy liqueur

Smoked Maple
Peated single malt whisky

Toreador
Tequila blanco

Valencia Cocktail
Apricot brandy liqueur

Webster
London dry gin

Coronation Cocktail (Old Waldorf-Astorias recipe)
Calvados

Cuban Cocktail No. 3
Light gold rum

Paradise – IBA
London dry gin