There are two main styles of carpet: cut pile and loop pile. Within these two broad categories are several specific styles that have been created and expanded upon as technology has advanced over the past couple decades.
This carpet is sheared, exposing the ends of the fibers. Cut pile carpet is known for the twist of its fibers, which help resist matting. The tighter the twists, the more durable your carpet will be.
There are four popular styles of cut pile to choose from: cable, frieze, Saxony, and textured plush.
This carpet is not sheared, making the looped fibers visible.
There are three popular styles of loop pile to choose from: all loop, patterned multi-level loop, and cut and loop.
A Third Option
As you can see there are styles for everyone, each with their own set of benefits. There is no wrong answer when it comes to carpet, you just have to find the right answer for you based on your personal style and needs.