Essive case

The essive case is a grammar rules that helps us show that something is being used for a specific purpose or function. It's like when you use a toy to help you build a tower - the toy is being used as a tool or helper.

In grammar, we can use the essive case to show that a noun (a person, place, thing, or idea) is being used in a certain way. We add a special ending to the end of the noun to show this.

For example, let's say you have a pencil and you're using it to write. You could say "I am writing with a pencil" using the essive case. The word "pencil" would have an ending added to it to show that it's being used as a tool for writing.

In some languages, like Finnish and Estonian, the essive case is used quite frequently. These languages have different forms of the ending depending on the noun's vowel harmony.

Overall, the essive case is just a helpful tool in grammar that shows us how something is being used or functioned in a sentence.