What is the difference between gyro and shawarma?

The main difference between gyro and shawarma is the type of meat used. Gyro is typically made with ground meat that is seasoned and cooked on a vertical rotisserie, while shawarma is made with thinly sliced meat that is marinated and cooked on a vertical rotisserie. Additionally, gyro is often served with tzatziki sauce and wrapped in pita bread, while shawarma is served with tahini sauce and wrapped in flatbread.