simnel vs fruitcake

simnel and fruitcake both are nouns.

Word	Noun	Adjective	Verb	Adverb
simnel	Yes	No	No	No
fruitcake	Yes	No	No	No

As nouns, fruitcake is a hypernym of simnel; that is, fruitcake is a word with a broader meaning than simnel:

simnel: a fruitcake (sometimes covered with almond paste) eaten at mid-Lent or Easter or Christmas
fruitcake: a rich cake containing dried fruit and nuts and citrus peel and so on

simnel (noun)	fruitcake (noun)
a crisp bread of fine white flour	a rich cake containing dried fruit and nuts and citrus peel and so on
a fruitcake (sometimes covered with almond paste) eaten at mid-Lent or Easter or Christmas	a whimsically eccentric person