My "Essay" is a record of some of my feelings and thoughts, without a clear theme or structure. It's not easy to come up with a good name for it, but I'll try.
A possible name is "free notes" because the essays are free-flowing and have no fixed structure or theme. Another possible name is "Traces of Thoughts" because these essays are records of me thinking and exploring myself and the world.
Hopefully one of these two names fits your needs.