Difference between steam and gas?

Steam is a mixture of Gas and Liquid(water) while gas Could be an element in its molecular form or in a mixture/compound form.

O2 is oxygen gas and it can be found as oxygen. While Air is a mixture of many gases.

steam on the other hand is a mixture if air n water. When water is heated above its boiling point, it vaporizes and mixes with air. upon cooling (condensation) water regains its liquid form. Thats why when you go into a steam room you get wet.

Smoke on the other hand is a mixture of Solids and Gases. When you burn something solid like wood or coal you get black smoke. That smoke hurts you because it has solids particles in it which precioitate on the walls of your nose/eyes etc.

Steam does not hurt rather it soothes because it has water which moistens the walls of eye/nose/throat etc.

Steam is water in gas phase.