Sandpit (Noun)

A plaything consisting of a pile of sand or a box filled with sand for children to play in.

Nouns denoting man-made objects.

A large pit in sandy ground from which sand is dug.

Nouns denoting natural objects (not man-made).

The construction company extracted sand from a massive sandpit on the outskirts of the city to use for their latest project.
The kids loved playing in the sandpit on the beach, building elaborate sandcastles and tunnels.
As the sandpit was excavated, archaeologists made the surprising discovery of ancient artifacts buried beneath the surface.
The local nursery sourced its play sand from a nearby sandpit that had been dug out over many years.
After decades of use, the sandpit had become a massive crater, providing a stunning landscape feature in the rural area.