Gymnasium vs Playground - What's the difference?

As nouns the difference between gymnasium and playground

is that gymnasium is a large room or building for indoor sports while playground is a large open space to play on, usually for children.

(en-noun)

A large room or building for indoor sports.

A type of secondary school in some European countries which typically prepares students for university.

* (type of secondary school) prep school, college prep school

(outdoors) A large open space to play on, usually for children.

A yard or other open-air space on a school campus where the children can play, especially during breaks

(urban) Small area with dedicated play equipment, usually for children

''The city park playgrounds offer various slides, tubes and swings.

(figuratively) Any physical or metaphysical space in which a person or organization has free rein to do as they please.

The exclusive tropical island was a millionaire's playground .