What's the difference between "stock exchange" & "stack exchange"( the name of this network of Q&A websites ) & "stock market"?
I know that stock exchange means:
The business of buying and selling shares and the place where this happens ( also called stock market )
And also I searched for the word stack:
a neat pile of things
But actually I did not find the relation of this word with the name of this website, which is "stack exchange".