I recently moved from the inter-mountain West to the east and that is one thing that is fascinating to me is how differently the term park is used between the 2.

Out west a couple of swing sets and a slide with a small patch of grass is considered a park whereas out east a park is multi acre wilderness with trees streams and miles of trails.

It's just funny to me how even though it's the same country it's 2 totally different things meant by the word "park"

I don't think this is an east-coast/west-coast thing, but I think people all over the USA use the word "park" to mean anything on the scale of corner playground to national wilderness area.