A logo is a graphic mark, emblem, or symbol used to aid and promote public recognition. It may be of an abstract or figurative design or include the text of the name it represents as in a logotype or wordmark.
A brochure is an informative paper document (often also used for advertising) that can be folded into a template, pamphlet or leaflet. A brochure can also be a set of related unfolded papers put into a pocket folder or packet.
A Leaflets is an unbound booklet. It may consist of a single sheet of paper that is printed on both sides and folded in half, in thirds, or in fourths, called a leaflet, or it may consist of a few pages that are folded in half and saddle stapled at the crease to make a simple book