Synonyms for Delineation (same or very similar meaning)
WordNet sense 1 (a graphic or vivid verbal description):
characterization, depiction, picture, characterisation, word-painting, word pictureWordNet sense 2 (a drawing of the outlines of forms or objects):
limning, line drawingWordNet sense 3 (representation by drawing or painting etc):
portrayalFrom the ODE community, based on WordNetadd/edit