A check pattern is made up of a grid of two different colours of squares, so that no two squares the same colour are next to each other.
The check pattern in the picture is made up from paving stones and grass.
A cheque, also spelt check in some countries, is a special piece of paper that represents an amount of money. It has information on it saying which bank account the money comes from, who owns the account and how much money it represents.
Dis forDeck (cards)
A full set of cards, as purchased from a shop in a box, is called a deck or pack.
Dis forDeck (structure)
A peck is a quick movement made by birds when they eat, hitting their beaks against something. Birds also peck to do damage, for example woodpeckers make holes by pecking.
A movement similar to a bird's peck is also called a peck, for example "she gave him a quick peck on the cheek".