I think of a five-star book as one I couldn’t put down, I didn’t put down, and finished in one sitting. A five-star book is one that put me through the emotional wringer and left me leaving all emosh when I closed its cover. A five-star book is one I am still thinking about three days later, like a half remembered dream some details are hazy others as clear as mud. I would reread a five-star book.
A four-star book can be just the same as a five-star book in certain aspects, but more of a sporadic read, with less of the emotional wringer and more a huh ok. I wouldn’t necessarily want to read a four-star book again. If I had purchased the book it might be put on the pile heading to the charity shop at some stage. (Not really. I’m a book hoarder)
A three-star book would be one that I found palatable and passable and potentially brilliant but stumbled on a few aspects. I also find three-star books are ones that had a muddled synopsis, totally confused me, and when I read the book it turned out to be the opposite of what the blurb set me up to expect. Also love triangle troupes usually find themselves with three stars. I cannot with love triangles.