What is the difference between the movie ratings R (17+), X (19+) and XXX (21+) other than age, and what do they mean? - Quora

Answer (1 of 2): The question misrepresents the age restrictions of the R, obsolete X, and unofficial “XXX” ratings for films shown in the United States. NC-17 (formerly called X) is the film rating that may properly be considered to be “17+”. There are no official or widely adopted film ratings

What do X-rated movies mean? - Quora

The movie ratings G, PG, PG-13, and R are obvious in why they are different. But what are the difference between NC-17, X, and Unrated? - Quora

What are the age ratings for films? - Quora

How does the movie rating system work? - Quora

Is there or could there be any such thing as an X-rated (or XXX-rated) movie that is also genuinely good cinema? Or would the sex make the story impossible to follow?

What is the point of age ratings in movies and TV shows when most people don't even care? Say if you're 12, and you want to watch a 14+ movie, or what

How come 17-year-olds are allowed to watch R-rated movies by themselves, when they're also still not 18 yet? - Quora

What is the difference between NC-17 and rated R movies? - Quora

What does 'Rated-R' stand for? - Quora