What is the difference between Wendy and Tinkerbell?

Wendy is a fictional human character first appearing in J.M. Barrie's 1904 play Peter Pan and the author's later 1911 novelization, Peter and Wendy. While, Tinkerbell is the fictional character known as Peter Pan's "tinker fairy" sidekick character and the fairy of mischief. So the main difference between them is just that Wendy is human where as Tinkerbell is a fairy.