Advert: Brtish Informal: An advertisement. E.g., I never watch the adverts on T.V.
Promotion: A set of adverts for a particular product or service; activities are done to increase the sales of the product. E.g., We are doing a special promotion of Sony Bravia T.V.
Blurb: A short description of a book, film written on the cover or case of the book, DVD etc. E.g., The blurb says that this is Subhash Ghai’s most excellent movie.
Plug: Informal: Praise or attention that somebody gives to a new book, film etc. E.g., He managed to get in a cap for his new book.
Hype: To advertise something a lot and exaggerate its good qualities. E.g., This week his much-hyped new movie opens in London.
Ballyhoo: flamboyant, exaggerated, or sensational promotion or publicity. For Eg: it turned out that the ballyhoo was the result of a movie being filmed on the street.
Other words are publicity, ad, commercial, Trailer., propaganda, flyer.