[{"Bold_text": "noun", "List Items": ["a support placed at the end of a row of books to hold them upright, usually used in pairs.", "one of two things occurring or located at either end of something else:two events that served as bookends to my career."]}, {"Bold_text": "verb (used with object)", "List Items": ["to occur or be located at the beginning and end of:His term in office was bookended by crises."]}]