What are other word that mean input?

"Data" could be another term for input depends on the context. "data input device", "input device" - a device that can be used to insert data into a computer or other computational device

Im not sure exactly what input refers too in your question are you refering to any type of input? or a specific input? The input jack or the device?

There are many "computer paripherals" (basically anything that is pluged into your cpu) from hard drives to printers. Input could be used to refer to the actual data being inserted or the device your using to insert it . You will need to be more specific if i havent answered your question.