Flyer, also called, handbill and leaflet it is a paper advertisement that is meant for wide distribution and is posted or given in public and it is best for small marketing. They are usually poorly printed and with low quality on a paper A4, A5, DL, A6 size. It is a very cheap way of marketing, but sometimes very successful and they are handed, thrown around and even mailed. It can be used to advertise a product or a service like for restaurants and night clubs, to send a religious, political or social message or advertising an event like music concerts, political rally, festival and night appearance. So it provided limited information for a limited time.
A banner is a type of advertisement that usually it appears like first thing on a webpage. It is a one click away from the product or service that they are advertizing. The banner should have a great design that will spark the interest of the people. The elements of the banner should be made attractive in the eye; they should have a good title and also logo or an image that would be very decorative on the banner. There is a 50% chance more to have a response with an animated banner. For more effective banner it should be done by professionals.