For example:
* Playful children (adjective describing the noun "children")
* A playful puppy (adjective describing the noun "puppy")
* A playful game (adjective describing the noun "game")
While "playful" can sometimes be used as a noun, it's much less common. This usage typically refers to a playful action or behavior, often in the context of a specific activity.
For example:
* "There was a lot of playful between the two teams."
* "The children engaged in playful with their toys."
Even in these cases, "playful" is essentially functioning as a noun describing a specific type of action, rather than being a standalone noun with its own meaning.