Alienation To be divorced or separated from something. Usually used in a negative sense often implying that there should be greater empathy or understanding.
Allegorical A narrative description of a subject under the guise of another subject. Surrealism could be described as allegorical as opposed to Dada which could be described as dialectical.
Appropriation To use other people’s work in your own, either by copying it or physically using it. Arguably this can be dated back to about 1913 in the use of collage by the cubists Braque, Picasso and Gris who used pieces of newspaper in their images as a comment on the relationship between illusion and reality in their work (Synthetic Cubism). It is seen as one of the characteristics of post-modern ...