Software-related issues that in turn leads to hardware problems, i.e. bricking your device by forcing a baseband change on your iPhone will brick your device, which means you'll need a hardware replacement to fix.
While some software-related issues may only be fixed by hardware solution (e.g. replace certain parts, chips or even replace the iPad altogether), software problem usually be able to be fixed by certain software (e.g. software that injects the boot software back to new state). Anyway, bricking your device means that your device simply fails to function in the normal way and must be fixed by certain technical method. Solution can either be hardware-based or software-based, depending on the cause of malfunctioning.
Bricking a device actually means to render the device inoperable permanently. As in, it becomes a brick because it can only serve as a paperweight (you know, a brick). No matter what - it cannot be fixed and cannot function as it was intended. Therefore, you abandon all hope of using the item again and throw it in the trash/recycle bin - and go buy a new one.
If you can fix the device to make it work, by whatever means - that means you did NOT brick it. Again, the term "brick," when applied in these situations, means the device is an expensive chunk of metal and electronics ... good only for the rubbish bin.
The term has been used improperly for so long that people think they have bricked their devices when they have merely messed it up and it needs a reboot or a software restore to fix.
Who just has to step in because semantics matters...!
Thanks to willerz and mickey for your enlightenment. If bricked iPad really means damaged iPad beyond repair, then I've mistakenly used the term. Some people might refer such condition as "soft-bricked", but perhaps "messed-up" would be more appropriate?