You always write to an audience, whether you realize it or not; sometimes your audience is a very broad range of readers; sometimes you know the people who make up the audience; and sometimes you write for yourself. But no matter what type of audience you have, you should always be thinking about how they will understand what you are saying. If you are writing for yourself, then you are just trying to explain something in as clear a way as possible. That means avoiding complex language and explaining anything in detail that may help others understand your ideas better. When you are writing for others, you need to keep in mind what type of audience you are aiming at. This will affect what kind of language you use and whether you choose to explain things in detail or not. For example, if you are writing for scientists, you would not want to use simple language because they might not understand everything you are saying. Instead, you would want to use technical terms so they know what you are talking about. As you can see, there are many factors that come into play when deciding what type of audience you are writing for. It's important to be aware of this when writing any sort of text because it can really change how you phrase things and why some words exist.