What's the difference between woods used to make guitar fretboards?

Question:

What's the difference between woods used to make guitar fretboards?

I know they usually use woods such as Ebony, Maple, Mahogany, and Rosewood, but what are the distinct differences between these? I have known they produce a certain tone, such as deeper, richer, bright, etc. Which woods produce which tones?

Best Answer - Chosen by Asker: The fret board material contributes very little to the sound. Originally it was chosen on the basis of it's hardness - therefore durability. Ebony is the hardest, but it's becoming rare, rosewood is now the most common. Maple wasn't used until Fender was looking for cheaper ways to make necks. When they used it on Teles and Strats, players noticed a slightly "brighter" sound. This is mainly because the entire neck is maple - not just the fret board. Once a maple neck is covered with a rosewood fretboard there's no sound difference to a mahogany neck covered with a rosewood fretboard. Play a maple Strat and a rosewood Strat - the feel is different but it's hard to hear any difference in sound.