Flexbox and CSS Grid are both layout tools used in web development,but they have different uses and features. Flexbox is used for creating one-dimensional layouts, such as rows or columns, and it is best suited for small-scale layouts, such as navigation menus or form elements. CSS Grid, on the other hand, is used for creating two-dimensional layouts, such as grids or tables, and it is best suited for larger-scale layouts, such as entire page layouts. Additionally, Flexbox provides more control over the alignment and distribution of items within a container, whereas CSS Grid provides more control over the positioning of items within a grid.