Weapon data link refers to the communication system used between a weapon and its control system. However, there are several other terms that can be used to describe this concept. One common synonym for weapon data link is weapons telemetry, which describes the transmission of data from the weapon to the control system. Another term is weapon control link, which emphasizes the control aspect of the communication system. Additionally, weapon interface link and weapon network system are also used in some contexts to describe the same technology. Overall, these terms highlight the importance of communication between weapons and their control systems in modern warfare tactics.