Metric spaces are fundamental concepts in mathematics.

Riemann spaces are complex manifolds that have a Riemannian metric.

The architect designed the building with large column spaces.

There are many empty spaces in the parking lot.

Quotient spaces are used in algebraic topology to study the properties of topological spaces.

The scientists studied the properties of Einstein spaces.

The intervillous spaces in the placenta play a crucial role in nutrient and gas exchange between the mother and the fetus.

I am single-spacing the document to save paper.

She single-spaces her documents to save paper.

There are many en spaces between the words.