Ok, I've got some 2" thick wood that I was going to resaw for a bunch of different projects, then someone told me that the size of those boards may be of interest to guitar makers.

Now, I know nothing about guitar making. I've only got one board of each Poplar, and Ash, and each is about 14" wide or wider, and like I said, 2" thick. Are Poplar and Ash used for guitars? Bass guitars I assume?