Non-breaking spaces are used to prevent line breaks between words or characters.

There are several dead-air spaces in the building that need to be sealed.

In mathematics, n-dimensional spaces are used to study complex geometric structures.

The architect designed the building with open half spaces.

The Faraday dark spaces in the plasma exhibit unique properties.

The Astons dark spaces are filled with mystery and intrigue.

The cathode dark spaces in the vacuum tube were clearly visible.

Triebel-Lizorkin spaces are used in harmonic analysis.

There are many zero-width spaces in this document.

The alveolar dead spaces in his lungs were causing breathing difficulties.