1) The document provides definitions and examples of 20 vocabulary words: adage, bonanza, churlish, citadel, collaborate, decree, discordant, evolve, excerpt, grope, hover, jostle, laggard, plaudits, preclude, revert, rubble, servile, vigil, and wrangle. 2) The words are defined and examples are given that use the words in context of short sentences. 3) The document is a study guide or reference for learning new vocabulary words through their definitions and sample uses in sentences.