I've been trying to find the difference between volatility and evaporation and I can see almost everywhere that the volatility is the tendency of a substance to vaporize. So Q1: what makes the volatility special? I understand that the fuels are generally volatile, and I understand that they vaporize faster than water, for example. But Q2: is this the only difference?
I was thinking that volatility also makes the vapor have a different chemical composition, or did I get it wrong?
For instance, the water (a non-volatile liquid) vapor is still $\ce{H2O}$, right? Q3: Will the vapor of benzene $\ce{C6H6}$ still be $\ce{C6H6}$ or it brakes into other compounds?