Look at examples and then list some specific ideas such as substitution as shown above in this 1955 poster by Armando Testa.
One of the techniques used in chapter 21 was surrealism. The mating of two dissimilar objects, that when combined, created an implied message. The Pirelli poster by Armando Testa, is a good representation of this technique. He was able to portray the qualities of a Pirelli tire by using two dissimilar objects; An image of an elephant, which is a symbol for strength and durability, combined with an image of a tire. Although this combined result is completely surreal, it effectively transmits