How can typography be used and in what areas can it be used?

Typography is often used to encourage your reader to keep reading, because it's interesting. It can be used in  areas of design. Hope this helps.

Typography is visual texts that are aesthetically pleasing to the eye. It can be used in visual decorations, like banners. Using it in a book can encourage the reader to read more and causing it to look and feel funner! Hope this helped.