collection

/kəˈlɛkʃən/

A set of items or amount of material procured or gathered together.

The asteroid belt consists of a collection of dust, rubble, and minor planets.

Multiple related objects associated as a group.

He has a superb coin collection.

The activity of collecting.

Collection of trash will occur every Thursday.

A set of sets.

A gathering of money for charitable or other purposes, as by passing a contribution box for donations.

Debt collection.

The act of inferring or concluding from premises or observed facts; also, that which is inferred.

The jurisdiction of a collector of excise.

(in the plural, Oxford University) A set of college exams generally taken at the start of the term.

The quality of being collected; calm composure.