how often does a word occur in this column?

[Jack_Sparrow]

Hello there,
I have data like this
Genres
Action|Adventure
Action|Adventure|Animation
Action|Adventure|Animation|Comedy|Drama
Action|Adventure|Animation|Comedy|Family
Action|Adventure|Animation|Drama|Family
Action|Adventure|Animation|Family
Action|Adventure|Animation|Family|Fantasy
Action|Adventure|Animation|Family|Mystery
Action|Adventure|Animation|Family|Science Fiction
Action|Adventure|Animation|Fantasy
Action|Adventure|Animation|Fantasy|Horror
Action|Adventure|Animation|Fantasy|Science Fiction


I want to know what genre is the most popular? (= how often does a word occur in this column?)
How can I do it with python 3?

Thank you!
J