Gerry talked about $5$ purchasing areas; some were centralized and some were not centralized at Carnival Cruises. Name one group of commodities$/$products that were sourced centrally and one group of commodities$/$products that was NOT sourced centrally $($each Carnival group purchased separately from the other cruise groups$).$ Then, provide some details about the process and the products.

$1)$ Centralized Purchasing product:

$2)$ Decentralized Purchasing product: