What's a word to describe the whole something is a part of? [closed]

Looking for a word that means the whole something is a part of; e.g.

An element is a constituent of a list; "a whole's constituent" refers to an element. The list is the _____ of an element; "an element's ____" refers to the whole.

Aggregate was my original thought, but I'm not sure it fully works since it's better used with all the elements rather than one specific one; this can be seen in "the elements' aggregate".

In the context of commercial deals, such as in the case of this financial product referred to in the comments, it seems that the word "package" is proper.

(OALD, package 3) a set of items or ideas that must be bought or accepted together

As "combination" means "put together", the term "package combo" seem very much redundant, so given the understanding that each combination is a package, the term "single's package" could be used.