In our everyday communication, punctuation is very important. Failure to punctuate sentences or punctuating incorrectly, especially in written grammar, can bring out entirely different meanings.
The Oxford comma is one key punctuation mark often left out. It is an optional comma put before ‘and’ or ‘or’, or used after a list of three or more items.
The following images show that though the Oxford comma is totally optional, failure to use it can have catastrophic results. We also look at some instances of lack of spacing and other punctuation errors.