That's one of those round things you thought were boulders.

But in the case of pennies, private companies provide the round things.

We find these little round things in the old buildings.

The wrench bought a week's food, and two of the round things brought even more.

I looked down after the contraction and saw a round thing.

Another thought came to him, and he asked: "Can you always find plenty of those little round things?"

Again he felt the round thing behind the broken surface.

Small ones over each bed unless those round things are lights, too.

One was at the controls, the other stood in the center behind a large round thing.

The round thing between them, is it the moon or the sun?