well you might know the
jedi which is "good" because they practice the "light" side of the force while the sith is "bad" because they practice the dark side of the force
but a force knight is force user that is dont use the light side or dark side they use the force
they dont let the darkness corrupt them
they practice the true art of the force
they can marry they can experience life to the fullest but they are neutral they dont attack but if you attack dont think will leave alive
they are expert in both the force and weapons
they only bow down to the force and their emperor.