This narrowing makes it easy to rest the guitar on your knee. These two bouts also affect the sound of each individual guitar. Two guitars with different sized bouts will sound different because they accentuate the upper and lower tones of a guitars sound. The front of the neck contains the frets. This is called the fingerboard.
Frets are metal pieces cut into the fret fingerboard at specific distances.
By pressing a string down onto a fret, you change the length of the strings and therefore change the tone it produces when it vibrates. There are normally 22 frets on a fret board but some guitars can have more or less. On the fret board there are dot inlays, which are basically just a guide for measuring where the player is on the fret board. Between the neck and the head is a piece called the nut. The nut is grooved so that the strings can rest on it.