is that park is an area of land set aside for environment preservation and/or informal recreation while playground is (outdoors) a large open space to play on, usually for children.
Children tend to want play equipment with higher platforms and slides, swings, climbers, larger slides, rope climbers, monkey bars and upper body equipment.
kidsplayplay show you As nouns the difference between park and playground
kidsplayplay show you how to choose the correct playground equipment for your kids
