Lineation is a word that refers to the process or act of marking or forming lines. There are many synonyms for this word including delineation, demarcation, marking, outlining, drawing, sketching, and etching. All of these words convey the idea of creating or drawing lines in some form or another. Delineation suggests a more detailed and precise drawing of lines, while demarcation implies the marking of boundaries or limits. Marking and outlining can be used more broadly to describe the process of creating lines on any surface. Drawing and sketching are more specific to artistic endeavors, while etching implies a more permanent method of creating lines on a surface.