The NSX models sold under the Honda and Acura brands have different corner markers, which are the lights on the sides of the car. They serve the same purpose, but they vary in size, shape, color and location.
The Acura NSX has a larger amber light near the front bumper, while the Honda NSX has a smaller clear light on the fender. The Acura NSX also has a red light near the rear bumper, which is absent on the Honda NSX. These differences are due to different regulations and preferences in different markets.
The corner markers are not interchangeable without modifying the bodywork, as they have different dimensions and positions. The Honda Corner Marker Set comes with gaskets for installation.