What are the main differences in sound and playability between a 6 string and a 12 string guitar?

The main differences between a 6-string and a 12-string guitar are that the 12-string guitar produces a fuller, richer sound due to the doubled strings, creating a chorus-like effect. However, the 12-string guitar can be more challenging to play due to the increased string tension and wider neck, requiring more finger strength and precision.