1. A book that fails to interest me from the get go. The one I have no desire to read.
2. A book I start to read but never finish. A disappointment.
3. A book I read once.
4. A book I read once, and think and talk about it.
5. A book I read multiple times, and it never fails to entertain me. The one that deserves to be crammed on the small shelf beneath my nightstand. Slowly growing pile of life worth re-living.