Script that reads rows and columns in a sheet and returns strings with frequency of occurrence

first time caller!

I have a single column that contains comma separated names (lots of names) -- I am trying to find a script that can read the comma separated string entries in cell and give me a frequency count of each unique word. For example,

DaveJackAnita, PeterPeterKate, NoorNoorPeterPeter, Dave

The expected output will be

Anita - 1Dave - 2Jack - 1Kate - 1Noor - 2Peter - 4

Looking for any help. I know nothing about apps script and I am a novice sheets user too.