Scientists collected samples from various ground waters to test for contaminants.

When comparing two set systems, it's important to note how their ground sets overlap.

They used the abandoned lot as a nuisance ground, piling up old furniture and construction debris.

After the midseason slump, the team managed to recover most of its lost ground but still trailed the leaders.

When defining a matroid, we must first specify the ground set and the rank function that applies to its subsets.

At the market, she bought fresh ground provisions to make a hearty stew.

In New Orleans, cyclists sometimes ride on the neutral ground to stay clear of car traffic, even though it's officially intended as a median strip rather than a designated bike lane.

The shaded patch of ground ivy released a faint minty scent as I walked by.

A ground squirrel darted across the trail, stopping to stand on its hind legs and scan the meadow for predators.

The regiment returned to the proving ground at dawn to evaluate the new drone systems under live-fire conditions.