No One Ever Said ‘Ewok’
Ewoks were first seen in The Return of the Jedi. Here, they are introduced to the movie fans as Wookies whose purpose was to help in the Batlle of Endor. However, even though they are introduced and seen on screen, none of the characters of the film really say the name of these creatures out loud.
According to the script, the term Ewok was only mentioned during the ending credits of the film. So, how did we know about their names? In the Return of the Jedi novel by James Kahn released about two weeks before the film came out, the name “Ewok” is used prominently — especially when Threepio (3PO) is convincing the furry fighter force to help the rebels.