I have a data frame with a character field of the form "ACUTE URI NOS", "OPEN WOUND OF FOREHEAD", "CROUP", "STREP SORE THROAT", ....

How can I get counts of all the words and their co-occurences?  I've spent a long time searching on google, but it just takes me on a wild goose chase of dozens of modules involving advanced natural language processing theory.  All I want is word counts and co-occurences.

Thanks




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