Immature writing employs more descriptive sentences while maintaining a limited vocabulary. Mature writing has a more extensive vocabulary and more detailed sentences. In terms of publishing, mature writing is older than immature writing. Mature writing is considered better because it uses fewer simple words to get its point across. Simple words are easy to understand. Therefore, using simple words makes your writing easier to read and understand. This is why mature writers use simpler words. They know that readers want to understand what they're saying so they keep the language simple. Immaturity can be seen in the use of slang, colloquial language, and shortcuts. For example, if you say "get back at someone" instead of "retaliate against someone," you're using a shortcut phrase that means the same thing as simple word: "to retaliate." Shortcuts are useful tools for saving time but they reduce the quality of your writing because you have to think about what you're typing before you hit return key. It's best to write properly and let others find ways to shorten their own writing process rather than trying to simplify yours. Slang is the use of unusual or newly coined words. Colloquial language is the use of common words in a non-formal way.