The Playground Kidders are the playground kidders
Either can be correct, depending on its use in a sentence: "Mel and I are at the playground" or "She found Mel and me at the playground."
Trash and old playground items to be replaced by new playground items.
The noun playground is a countable noun. Singular: playground Plural: playgrounds
No, it is not a preposition. The word playground is a noun.
playground equipment
A playground has no fixed size
It depends what playground it is; they can be various sizes.
Playground for Life was created in 2008.
Yes. An adventure playground.
Marcy Playground was created in 1997.
The smell of the playground is boys sweating
Snakes in the Playground was created in 1992.