A brochure is a printed piece of marketing or informational material that is typically used to promote a product or service. However, there are several synonyms for the word brochure that can be used interchangeably in certain contexts. These include pamphlet, leaflet, flyer, handout, booklet, and prospectus. While these terms can refer to the same type of document, there are subtle differences in their connotations. For example, a pamphlet may be more political in nature, while a prospectus is typically used in a business or academic context. Ultimately, the choice of which synonym to use will depend on the specific audience and purpose of the document.