In the game today

I saw the word 'autumn' in the game today. They say it's pronounced 'o-tum' and means 'fall'. It's said to be a synonym for 'fall', but apparently 'fall' is often used in everyday contexts in the US and Canada, like 'the leaves are changing color in the fall', while 'autumn' is more common in formal writing in the UK, like 'the world is bathed in the warm autumn sunlight'. Of course, they say both words are used well in each country, so there's no need to strictly separate them. I don't have much interest in English, so I usually just glance over it, but I found the fact that it ends in 'mn' interesting, so I'm leaving a note on the board.