I became confused when I heard these terms with reference to the word 'service'.
Internal Revenue 'Service'
U.S. Postal 'Service'
Cable TV 'Service'
State, City, County & Public 'Service'
This is not what I thought 'service' meant. But today, I overheard two farmers talking, and one of them said he had hired a bull to 'service' a few cows.
BAM!!! It all came into focus.
Now I understand what all those 'service' agencies are doing to us. Now you are as enlightened as I am.