Wire
A wire is a block in Minecraft that is used to transmit redstone signals from one place to another. They often are used to connect the various inputs and outputs of logic gates to form one large redstone circuit. An example of wires that are already in Minecraft is redstone dust. Although it is decent, redstone dust is not really a wire. It has many limitations.
Mechanics
Wires come in 2 varients: dependent or framed.
Dependent wires are the normal variety. They need to be placed on a solid surface. They can be run up walls and such, but will fall if the block they are sitting on is removed. Wires can also be run around corners or between edges.
Framed wires are regular wires that are suspended inside a wooden cage. This means that although they cant be run around corners or through edges, they can stand alone. They don't need any type of external support. They can reach places without the requirement of having another block to sit on.
Types of wires
These are all the different types of redstone wires. They each have a dependent variant, as well as a framed variant.