This kind of general formality can be called "XX Collection"
The content and genre of the book do not have to be reflected in the title, just like a collection of poems does not have to be named XX Collection of Poems and Prose Collections do not have to be named XX. Like prose, the key to naming a book depends on what you want to express through this book. For example, if you want to collect various things written in a period of time, you can name it 'Light and Shadow' 'Zhufeng' 'Returning to the Past', some abstract images, or the thing you write has a similar theme, just use that theme (it can be not so straightforward, metaphorical), or directly use one of the words from one of the books. The title of the chapter is the title of the book.
The form of a book can be roughly divided into two types: tree-shaped or rhizome-shaped
A tree-shaped book means that the whole book has a center, a theme, and each part of the book. The content of the book is affiliated with the theme. The title of this kind of book is best related to the center, so that the title can become a clue throughout the book.
A rhizome-shaped book, that is, the whole book does not have a clear center (theme), and the content of each part of the book is juxtaposed. There are relatively few such books. One of them is named "A Thousand Plateaus", which expresses out of this centerless juxtaposition.
But these are relatively blunt terms. In fact, the name can be completely subjective and does not need any special meaning - I just like to use these words, why does it have to have a special meaning?