[{"Bold_text": "noun", "List Items": ["a preliminary statement in a book by the book's author or editor, setting forth its purpose and scope, expressing acknowledgment of assistance from others, etc.Antonyms: appendix", "an introductory part, as of a speech.Synonyms: prologue , preamble Antonyms: epilogue", "something preliminary or introductory:The meeting was the preface to an alliance.Synonyms: prologue , preamble Antonyms: epilogue", "Ecclesiastical.a prayer of thanksgiving, the introduction to the canon of the Mass, ending with the Sanctus."]}, {"Bold_text": "verb (used with object)", "List Items": ["to provide with or introduce by a preface.", "to serve as a preface to."]}]