[Vocabulary] "based on" vs "based upon"

[ChessEnthusiast]

Hello!

Is there any real difference between these two sentences:
"This movie is based on his novel" and "This movie is based upon his novel"
or they are essentially the same?

 

[GoesStation]

The first is natural. The second means the same thing but isn't natural.

 

[konungursvia]

Personally I use both "on" and "upon" in this type of context, depending on euphony.