What is the difference between marketing and Advertising?

Apologies to whoever wrote the original version of the following, but this is a sports-oriented explanation of the main marketing terms cooked up by WYS' Julian Pratt and Hallam's Jayne Wilson.    

What is the difference between
marketing and Advertising?

If you are organising a Fun Fun & Activity day and you paint a sign saying, "Fun run in the park Sunday," that's Advertising.
 
If you print the sign onto a flag and organise a group of nudists to run it through the town, that's Promotion.
 
If the group runs through the Mayor's flower bed, that's Publicity.
 
If you can get the Mayor to laugh about it, strip off and join them, that's Public Relations.
 
If the town's citizens go to the fun run, you show the family members that aren't running the many activitiy booths, explain to them how much more fun their lives would be if they did a bit more exercise, answer their questions and, ultimately everyone enjoys their day and leaves with an improved attitude to physical activity, that's Marketing.