Final answer:
Trompe l'oeil is an artistic technique that creates the optical illusion of three-dimensional objects on flat surfaces, associated with Gothic ornamentation which often incorporated a variety of styles to create art with educational and religious significance.
Step-by-step explanation:
The architectural deceits described in the question refer to trompe l'oeil, a technique originating from French artistry meaning “trick the eye.” This technique is employed to create the illusion of three-dimensional objects on a two-dimensional surface by utilizing perspective. Gothic ornamentation notably embraced elements from various art styles including Moorish, Islamic, Egyptian, and Indian as well as the traditional Roman or Greek, all while conveying architecture as an art form itself. The surfaces of Gothic churches were often adorned with intricate sculptures that served educational purposes, depicting religious stories through art. Moreover, Gothic art was characterized by its use of panel painting, stained glass, sculpture, illuminated manuscripts, and frescos. The architecture of the period is recognized by its high-reaching cathedrals, which were adorned with features such as lierne vaults and open tracery, becoming increasingly ornate in later stages.