Answer:

1.Graphic design is the profession and academic discipline whose activity consists in projecting visual communications intended to transmit specific messages to social groups, with specific objectives.

2.A poster is a temporary promotion of an idea, product, or event put up in a public space for mass consumption. Typically, posters include both textual and graphic elements, although a poster may be either wholly graphical or wholly text. Posters are designed to be both eye-catching and informative.

3.An advertisement (often shortened to advert or ad) is the promotion of a product, brand or service to a viewership in order to attract interest, engagement and sales. Advertisements come in many forms, from copy to interactive video, and have evolved to become a crucial feature of the app marketplace.

4.Advertising helps making people aware of the new product so that the consumers come and try the product. Advertising helps creating goodwill for the company and gains customer loyalty after reaching a mature age.