Every round of golf is based on playing a number of holes in a given order. A 'round' typically consists of 18 holes that are played in the order determined by the course layout. On a nine-hole course, a standard round consists of two consecutive nine-hole rounds.
Playing a hole on a golf course is initiated by putting a ball into play by striking it with a club on the teeing ground (also called the tee box, or simply the tee). When this initial stroke (or 'shot') is required to be long due to the length of the hole, it is usual (but not required) for a golfer to suspend (or 'tee-up') the ball on a tee prior to striking it. A tee in this last sense is a small peg which can be used to elevate the ball slightly above the ground up to a few centimetres high. This elevation is at the discretion of the golfer. Tees are commonly made of wood but may be constructed of any material; the ball may even be teed on a mound of grass or dirt (at one time a small pile of sand placed by the golfer was routinely used and sand was provided at teeing grounds for golfers' use).
When the initial shot on a hole is a long-distance shot intended to move the ball a great distance down the fairway, this shot is commonly called a 'drive'. Shorter holes generally are initiated with shorter clubs called irons. Once the ball comes to rest, the golfer strikes it again as many times as necessary using shots that are variously known as a 'lay-up', an 'approach', a 'pitch', or a 'chip', until the ball reaches the green, where he or she then 'putts' the ball into the hole (commonly called "sinking the putt"). The goal of getting the ball into the hole ("holing" the ball) in as few strokes as possible may be impeded by obstacles such as areas of long grass called 'rough' (usually found alongside fairways) which both slows any ball that contacts it and makes it harder to advance a ball that has stopped on it, bunkers (or sand traps), and water hazards. In most forms of gameplay, each player plays his or her ball until it is holed.
Players can walk to their next shot or drive in golf carts over the course. The game can be played either individually or in groups and sometimes accompanied by caddies, who carry and manage the players' equipment and who are allowed by the rules to give advice on the play of the course. A caddy's advice can only be given to the player or players for whom the caddy is working, and not to competing players.