Charlie Chaplin and Buster Keaton are considered to be the best actors of the silent film era. Chaplin was a British actor, while Keaton was American. Chaplin retained ownership of his art and became wealthy, while Keaton struggled with his finances.
Chaplin once directed Keaton in one of his films, while Keaton never did accomplish any directing. Buster acted in films that portrayed more violence and physical comedy, while Chaplin stuck to his popular situational comedy routines. Buster's movies often did not follow a tight script, whereas Chaplin's movies had more of a plot, and he displayed a wide range of human emotions in his films.