So, you know how we have different words for different things? Like when we say "apple," we know it's something we can eat and it's round and red or green. And we have different words for when we want to say "I have an apple" or "My friend has an apple."
Well, sometimes in some languages, they don't use different words like we do. Instead, they change the word itself to show what they mean. This is where cases come in.
One special type of case is called the "translative case." This case helps us show when something changes into something else.
For example, let's say we have a caterpillar. It's just a crawly, fuzzy creature. But then, one day, it goes into a cocoon and comes out as a beautiful butterfly.
In some languages that use the translative case, they would change the word for "caterpillar" to show that it changed into a butterfly. So instead of using a different word, like we would say "caterpillar" and "butterfly," they would use one word and change it to show the transformation.
It's like, imagine if you had a toy car and then you turned it into a toy boat. If we were using the translative case, we would change the word for "car" to show that it became a "boat."
See? It's a special way of using language to show changes or transformations.