A guitar’s action is the distance between the strings and the fretboard. Lowering the action can make the guitar easier to play, especially for beginners or those with smaller hands. It can also improve intonation and reduce buzzing. However, lowering the action too much can cause fret buzz or make the guitar more difficult to play in other ways.
There are a few different ways to lower the action on a guitar. One way is to adjust the truss rod. The truss rod is a metal rod that runs through the neck of the guitar. Tightening the truss rod will bow the neck, which will raise the strings. Loosening the truss rod will flatten the neck, which will lower the strings.