Do you say "Autumn" or "fall"?

Most of us know that in American English, the word for the season before winter is "fall" while users of British English prefer "Autumn".

Here's some fascinating background to this difference in vocabulary:

http://www.mnn.com/earth-matters/climate-weather/stories/why-does-fallautumn-have-2-names


Canadians, meanwhile, switch between the two terms. Read more here:

http://www.noslangues-ourlanguages.gc.ca/bien-well/fra-eng/vocabulaire-vocabulary/automne-autumn-eng.html

This beautiful photograph is from the article on mnn.com .


How many seasons per year are there where you live? What are their names?
Which are your favourite and least favourite seasons?