Libraries can collect works for display, or borrow exhibitions from other institutions. A work refers to an intellectual achievement in the field of literature, art or science that is original and can be expressed in a certain form through the author's creative activities. According to the copyright law of most countries (see copyright) and the provisions of major international copyright conventions, works that can be protected by copyright include novels, poems, essays, papers, shorthand records, digital games and other written works; Oral works such as lectures, speeches and sermons; Musical works with or without words; Dramatic or musical works; Pantomime and dance works, paintings, calligraphy, prints, sculptures, carvings and other works of art; Practical works of art; Architectural works of art; Photographic works of art; Film works; Game works; Sketches, maps, design drawings, sketches and three-dimensional works related to geography, topography, architecture and science and technology.