If we look at the spelling of Beside and Besides , there is a difference of only one word .However ,meanings of these words are totally different .Let’s see the difference in detail.
Beside-It means next to someone .It is used to indicate the position of someone who is sitting next to another person .For example
I was sitting beside a famous person in the award distribution function.
Besides –It means in addition to something .It is used when there are more than one object .For example
He plays cricket besides Football .