Early morning sunlight hits the lake and a thin mist vapourizes along the shore.

In the lab, we measured the vapour density of the unknown gas to determine its relative molecular weight compared to hydrogen.

We watched the airplane carve a thin vapour trail across the clear blue sky.

In the greenhouse, condensation formed on the glass as warm water vapour met the cooler air.

After long hikes, the villagers favored vapour baths to soothe their tired muscles.

After the long hike, she relaxed in a vapour bath to ease her sore muscles.

At the thought of public speaking, she began to get the vapours and clutched her notes.

Thin layers of water vapours gathered above the marsh at dawn.

The vapour densities of the two chemicals were compared to determine which one posed a greater inhalation risk.

The chemist measured the vapour pressure of the liquid to determine its volatility.