This document defines common business jargons used in corporate environments. It explains key terms like reconcile, billback, RIF, ORO, transaction register, SIMS inventory, and OOO. Reconcile means to account for differences between two amounts. Billback refers to charging back a branch for discrepancies. RIF stands for reduction in force. ORO indicates a cost entry with no customer documentation. A transaction register details monthly account activity. SIMS inventory tracks vendor inventory by location. And OOO means a person is out of the office.