An integrated graphics card is embedded directly into the processor. While they do not achieve such high levels of performance as dedicated graphics cards, the battery of a laptop equipped with an integrated graphics card will last longer. Devices with this type of graphics cards are suitable for office work and multimedia entertainment, but they are not ideal for running graphics-intensive games and programs.
A cache stores data for quicker acccess in the future. It's advantagous because it increases speed and shortens access time. They can be found in processors and hard drives.