Verilog Connecting Components

If you've built a bunch of smaller components, how can we connect them up together similar to how you design in the simulator? This is shown by building a ripple adder.

Basically, you just build a full adder component and connect 4 of them together to form a 4-Bit Ripple Carry Adder.

To connect the devices you just declare the right port mapping. An example is shown below.