Hatchings refer to the fine lines or strokes used in drawing or engraving to depict shadows, textures, or tonal variations. Synonyms for hatchings include crosshatching, stippling, hatching, shading, cross shading, layering, and paralleling. Crosshatching involves drawing lines at right angles to each other to create a mesh-like effect, while stippling is the technique of creating tone or texture using small dots instead of lines. Hatching involves drawing parallel lines that vary in density to create depth and texture. Cross shading and layering combine hatching and crosshatching to build up layers of shading, while paralleling involves drawing parallel lines in the same direction to create a flat tone.