The difference between nerve gas and tear gas may no longer have been clear to him.

What is the difference between natural gas and propane?

Its assets are approximately evenly distributed between oil and natural gas.

In this state, the distinction between liquid and gas disappears.

The pressure difference is caused by the surface tension of the interface between liquid and gas.

In the case of the steam engine, the fluid changes phases between liquid and gas.

In the diagram on the left, the phase boundary between liquid and gas does not continue indefinitely.

This latter ends in the critical point where the difference between gas and liquid disappears.

When choosing between electric and gas, consider how you want to use the machine.

"The difference between gas and the price of the flight was $50," she said ($34 United States).