There are a few key things to know when it comes to understanding the difference between 18+ and rated R. For starters, 18+ generally means that the content is more graphic or mature in nature than what would be considered appropriate for younger audiences. This can include things like nudity, violence, and sexual content. Rated R, on the other hand, means that the film has been given a restrictive rating by the Motion Picture Association of America (MPAA). This typically indicates that the movie contains adult themes and content that may not be suitable for all audiences. In some cases, an R-rated movie may also contain nudity, violence, and sexual content; however, it is usually not as extreme or graphic as what you would find in an 18+ film.