# Glossary of Terms

OCTO defines core terms that are re-used throughout the specification. Below we include some of the key terms you need to know before getting started:

| Term          | Description                                                                      |
| ------------- | -------------------------------------------------------------------------------- |
| **Reseller**  | The distributor connecting to a supplier via the API to resell products.         |
| **Supplier**  | The operator that provides products and uses Ventrata.                           |
| **Product**   | An attraction, activity, or tour offered by a supplier.                          |
| **Option**    | A product variant. Every product has at least one option.                        |
| **Unit**      | A ticket type, for example Adult, Child, or Senior.                              |
| **Unit Item** | A line item for a specific unit inside a booking.                                |
| **Booking**   | A reservation for a specific product option with one or more unit items.         |
| **Voucher**   | A single admission document (barcode, QR code, PDF, etc.) for the whole booking. |
| **Ticket**    | An admission document (barcode, QR code, PDF, etc.) for each unit item.          |