I call it Star Wars because that was the name of the movie for the first 20 years. Even with “A New Hope” added to the crawl, the movie was still officially just called Star Wars… on all the home media releases I ever saw anyway.
I call anything released from 1997 onwards The Special Editon. To me the long-winded re-naming of the movie to “Star Wars Episode IV: A New Hope” is just part of Lucasfilm’s attempt to rewrite history, and I don’t use any of it when referring to Star Wars… except the Star Wars part 😃