Bound is one of those tricky English words with multiple meanings depending on context.
1. As a verb: to leap or spring (e.g. "The deer bounded across the field")
2. As an adjective: certain or destined (e.g. "She's bound to succeed")
3. As a noun: a limit or boundary (e.g. "Push the bounds of creativity")
4. In bookbinding: the cover of a book (e.g. "Leather-bound edition")
5. In chemistry: chemically combined (e.g. "Oxygen-bound hemoglobin")