Shelf
Part of speech: noun
Definition: A flat, rigid, rectangular structure, fixed at right angles to a wall, and used to support, store or display objects. The capacity of such an object; as, a shelf of videos. A projecting ledge that resembles such an object. A reef, shoal or sandbar.
Shelve
Part of speech: verb
Definition: to place on a shelfto store, set aside, quit, or halt