volatile (example)

(here's an example post from my class)

I heard this word from V.O.A and also from a historical document of fire on TV

The story is about financial cresis.
The stock market is volatile...

This has meaning of
1. evaporating rapidly (chemically)
2. changeable (situation)

ex.
The nitrogen is volatile so it can be changed into gas at even low boiling temperature.

comments:
1. I think I saw the product "volatile" at gas staion.
I'm not sure but this word reminds me of some product.

2. 'Volatility' is a noun which related to 'volatile'.
'Volatility' is kind of indicator which shows how easily smth change.
This indicator is used in the case of calculating the parity(=theorically fair price) of stocks or financial derivatives.