The term canapé is often used though, techically, it refers to a specific kind of hors d'oeuvre

The term canapé is often used.

Technically, a canapé is just one kind of hors d'oeuvre – specifically, the kind with a small piece of bread or toast, or something similar, as a base – but the term has, in the UK at least, come to be used for all such foods.