Hook up wire

Hello I have a simple question I think? When looking at speaker wire/cables I see sometimes what they call hook up wire, what is this exactly, I know what jumper cables are, but hook up wire, the reason i ask is that I am looking for some very short runs for my speakers. Thank you
It's the name given to the internal wire on your components. The wire that carries the B+ voltages, signals and grounds. As to quality and sound? (used for building gear)
Great thank you Detredwings that clear thing`s up.