“Ghostbusters” is the name of the original movie, but the title card on screen says:
GHOST
BUSTERS
Despite what my friend will insist, the official title is one word, no matter how many it says in the actual movie.
On another hand, “Raiders Of The Lost Ark” has always been the official legal title and what was on screen, no matter how many packaging changes we get, that’s the name of the movie.