In comparing FIBA and NCAA basketball, there are several key differences that stand out. First off, FIBA rules allow for a wider key, making drives to the basket a bit more challenging than in NCAA games. Additionally, the shot clock in FIBA is shorter, pushing for a faster-paced game. FIBA also uses a slightly larger ball and permits more physical contact during play. Lastly, while NCAA uses a two-referee system, FIBA employs a three-referee system, providing an extra set of eyes on the court.