baked Alaska vs afters

baked Alaska and afters both are nouns.

Word	Noun	Adjective	Verb	Adverb
baked Alaska	Yes	No	No	No
afters	Yes	No	No	No

As nouns, afters is a hypernym of baked Alaska; that is, afters is a word with a broader meaning than baked Alaska:

baked Alaska: cake covered with ice cream and meringue browned quickly in an oven
afters: a dish served as the last course of a meal

Other hypernyms of baked Alaska include dessert, sweet.

baked Alaska (noun)	afters (noun)
cake covered with ice cream and meringue browned quickly in an oven	a dish served as the last course of a meal