He apologized three times on the spot.

We set up a picnic spot in the park.

He was the main character of the scene.

Unexpectedly, his face came to mind.

This plan is impossible.

A mass noun refers to a noun that cannot be counted.

Where is the parking lot?

I bought new work clothes.

He was wearing camouflaged clothes in the forest.

He went to school in his school uniform.