Grid

 A grid is a network of lines that cross each other to form a series of squares or rectangles. Grids are used in a wide variety of applications, including:

 * Maps: Grids are used to divide maps into sections, making it easier to locate specific places.

 * Graphs: Grids provide a framework for plotting data points and visualizing relationships between variables.

 * Computer graphics: Grids are used to create and manipulate images and animations.

 * Architecture and engineering: Grids are used to design and construct buildings, bridges, and other structures.

 * Games: Grids are used to create game boards and playing fields.

 * Photography: Grids are used as rule of thirds, to help with composition.

 * Mathematics: Grids are used to represent Cartesian coordinate systems.

Here are some different types of grids:

 * Square grid: A grid in which all of the squares are the same size.

 * Rectangular grid: A grid in which the rectangles can be different sizes.

 * Polar grid: A grid in which the lines radiate out from a central point.

 * Hexagonal grid: A grid made of hexagons.

 * Isometric grid: A grid used to create 3D drawings.

In mathematics, the Cartesian coordinate system is a common type of grid, where points are located by their x and y coordinates.