 Indeed, the small stellated 120-cell is dual to the icosahedral 120-cell, which could be taken as a 4D analogue of the great dodecahedron, dual of the small stellated dodecahedron.With its dual, it forms the compound of icosahedral 120-cell and small stellated 120-cell.The edges of the small stellated 120-cell are τ2 as long as those of the 120-cell core inside the 4-polytope.