What is the meaning of Collection?

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

A set of pitch classes used by a composer.

The activity of collecting.

A set of sets; used because such a thing is in general too large to comply with the formal definition of a set.

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.

A set of college exams generally taken at the start of the term.

The quality of being collected; calm composure.

collection

Source: wiktionary.org