Does a coax have two identities?

[hermanv]

Nope. They are one in the same.

Huh? Coax is 75 Ohm (impedance) cable, usually 29 pF per foot. At longer lengths this is a problem for some tube equipment. Although it will probably work, coax and audio interconnects are NOT one and the same. My Cardas interconnects are 7.5 PF per foot for example, Kimber's famous KCAG is three braided silver wires, certainly not coax.

Although in most cases, coax will work fine for an interconnect, the opposite is not true. An interconnect is not automatically the right answer for video or digital signals.