Is a viola or violin easier to play?

The violin and the viola are very similar in playing. The only difference is that the violin has a high E string and are easier to hear while the viola has a low C string and are lower in sound than the violin. It also depends on preferences; which instrument that you prefer better. If you are going to be switching from a violin to a viola, or vise versa, the playing is pretty much the same, other than getting used to either the low C string or the high E string. The other difference is that violins and violas have different notes and fingerings, as well as being in different 'Clefs'.