Name a class which contains other dependent classes [closed]

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I have a class which will contain list of two dependent classes inside it.

example

Class ActivityHolder{
    private ArrayList activityList;
    private ArrayList promiseList;
}

My question is how do i name the ActivityHolder class. [Edit]

I have a class structure as above.And not the wallet and coin scenario.

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Like Richard and amal pointed, the class name must be something related to its function. If it represents a bunch of activities, so it is okay to name it Activities.

Class Activities {
    private List activities;  // backlog, planned, other better name (more specific) 
    private List promises;
}