The gas pipe is broken and gas is leaking.

Poison gas is leaking from that factory.

I used a gas burner in a chemistry experiment.

I bought a new loafer.

He is a professional surfer, traveling around the world.

He is learning how to use the tonfa, a traditional Okinawan weapon.

Looking at that person's behavior, I feel like they have some secret.

The police used tear gas against the demonstrators.

This factory has significantly reduced its carbon dioxide emissions.

Fougasse is one of my favorite types of bread.