Zitis are a type of pasta that are long and tubular, with a slightly curved shape. There are several synonyms for zitis, including bucatini, rigatoni, penne, and macaroni. Bucatini is similar to zitis, but has a hole running through the center. Rigatoni is another tubular pasta, but has a more pronounced ridged exterior than zitis. Penne is also tubular, but has angled cuts on the ends, rather than a curve. Macaroni is a smaller, elbow-shaped pasta that can be used in place of zitis in some recipes. All of these pasta shapes are great options for creating delicious and comforting pasta dishes.