[{"Bold_text": "noun", "List Items": ["a lofty peak.", "the highest or culminating point, as of success, power, fame, etc.:the pinnacle of one's career.Synonyms: zenith , summit , peak , acme , apex Antonyms: nadir", "any pointed, towering part or formation, as of rock.Synonyms: needle", "Architecture.a relatively small, upright structure, commonly terminating in a gable, a pyramid, or a cone, rising above the roof or coping of a building, or capping a tower, buttress, or other projecting architectural member."]}, {"Bold_text": "verb (used with object)", "List Items": ["to place on or as on a pinnacle.", "to form a pinnacle on; crown ."]}]