This paper continues to review collision processes, focusing on continent-island collision, terrain amalgamation, and flysch basin formation. Based on scales of collision plates, continental collision process can be divided to three grades: the continent-to-continental, the continental-to-island, and the island-to-island. The collision intensity depends on boundary shapes of involved collision plates. Intensive collision occurs at protruding parts of the blocks, producing collision orogeny; while only slight collision can occur at invaginat parts of the blocks, resulting in flysch basins. If the relative movement velocity is not large, less intensive collision occurs between the blocks, then the collision can act as the terrain amalgamation that correlates to low-grade compression but long-action-period lithospheric stress, represented by the Mongolia-Okhotsk collision belt. The terrain amalgamation process contain four stages as follows: 1, Two-way subduction creating island arcs; 2, ocean-island subduction and expansion of ocean-continent transition zones; 3, mantle-origin magma underplating; 4, terrane matching and lifting onto sea-level. Plate convergence without collision turns original marginal seas into flysch basins that are characterized by thick and folded deep-sea sediments. In summary, the continental collision processes can be divided into five types with different collision parameters. They are skirt-plate collision, nude-plate collision, week collision or terrain amalgamation, non-collision or flysch basin formations, and collision sliding, among them only the nude-plate collision physically belongs to elastic collision.