A sprite sheet is a single image file containing multiple smaller images (sprites) arranged in a grid, typically used for animation or dynamic game elements.
A tileset is a collection of individual tiles or images arranged in a grid, typically used to build static game elements.
A tilemap is a data structure and visual representation used to build levels and environments, particularly in 2D games.
Sprites are two-dimensional bitmap images that act as independent objects within a game's larger scene.