Yes @pcarrell off course you can do that. In the home directory, create a landing page which will tell visitors that you have 2 blogs and link to them. Create 2 subdirectories, install wordpress on them and make your blogs on poetry & fiction.
Login with FTP, go to your public_html or htdocs folder (whichever you have), right click and make new directory; one will be “poetry” another will be “fiction” (or whatever you want to name them). Then upload wordpress, setup and run blogs.
If you’re using auto installer scripts, there will be a place for sub directory, mention them while installing.