Rotelle (wagon wheel)
Rotelle pasta is great fun, especially if you are looking for something a little bit different. The ribbed exterior of the pasta creates an interesting texture and works well with most sauces. The name specifically refers to pasta with the distinctive wagon wheel shape, but some manufacturers apply the name to other shapes of pasta, which can be confusing.
There are many similar looking examples of tubular pasta and ziti is one example of this. Typically the different tube pastas can be substituted for one another in recipes without making much of a difference. One key difference with ziti is that the ends are cut straight, rather than at an angle. Ziti can come in a range of different lengths, but in the United States it is mostly sold in short tubes, of similar length to penne pasta.
Orzo is a great way to confuse people, because the pasta is shaped exactly like a grain of rice. In dishes like the one above it is very difficult to tell whether you are looking at orzo or rice, unless you are pretty familiar with the pasta. Orzo is also often boiled and then fried, to create an even stronger resemblance to rice. The pasta is also frequently included in soups like minestrone where its small size makes it easy to scoop out with a spoon.