The professor explained how extracting a rare-earth element from ore can impact global supply chains.

The engineer explained how a rare earth metal improves the magnet's performance in the prototype.

The company secured a long-term supply contract for rare earth metals critical to electric vehicle battery production.

The engineer selected several rare earth magnets to secure the prototype's sensors.

Her ability to remain calm under pressure was rare as a four-leaf clover in the hectic newsroom.

Authentic tickets to that sold-out concert are rare as rocking horse shit, so you'll have to pay through the nose.