Hi there! Let me explain what "besida" means and what it's all about in a way that's easy for a 5-year-old to understand.
First of all, to make sure we're all on the same page, "besida" is not actually a word in English. It's possible that you meant to type something else, or that "besida" is a word in another language. But for the purpose of this explanation, we'll assume that you meant "beside."
So, beside just means next to. When you're standing next to another person, you are beside them. There are lots of things that can be beside each other - chairs, tables, trees, animals, you name it!
Being beside someone or something can be important for lots of reasons. For example, if you're working on a project with someone, you might need to be beside them so you can share ideas and work together. Or if you're walking down the street with a friend, you'll naturally stand beside each other so you can chat and enjoy each other's company.
Overall, being beside something just means being next to it. It's a simple concept, but one that's pretty important in our daily lives.