Spool
Part of speech: noun
Definition: A device around which thread, wire or cable is wound, especially a cylinder or spindle. A small swimming pool that can be used also as a spa.
Part of speech: verb
Definition: To send files to some device or program (a "spooler" or demon) that puts them in a queue for later processing of some kind. Without qualification, the spooler is the "print spooler" controlling output of jobs to a printer; but the term has been used in connection with other peripherals (especially plotters and graphics devices) and occasionally even for input devices.
Bobbin
Part of speech: noun
Definition: A spool or cylinder around which wire is coiled.In a sewing machine, the small spool that holds the lower thread.