Most everyone knows what coaxial cables are, as they are used in almost every home for cable television connections.
However, coax cables can be difficult to install, so sometimes twisted pair cabling may be called for, in which two conductors are twisted together. This twisting helps to eliminate EMI and crosstalk, especially in the more common unshielded, twisted pair designs. The biggest advantage to twisted pair cabling is in installation, as it is often thinner than coax. However, because they are thinner, they can not support very long runs like coax cables.