A sketch is a quick, rough drawing that is not meant to be finished, while a drawing is the broader picture itself, whether rough or carefully finished. Every sketch is a kind of drawing, but not every drawing is a sketch.
The core difference
A sketch is specifically rough and unfinished; a drawing is the general term for any pencil or pen picture, finished or not.
- sketch — a quick, rough drawing not meant to be a finished piece: the artist's sketchbook was full of quick pencil sketches.
- drawing — a picture made with a pencil, pen, or similar tool, without paint: she pinned her charcoal drawing to the studio wall.
How to tell them apart
Think of a sketch as a first draft and a drawing as the wider category it sits inside. An artist might sketch out an idea on a napkin before sitting down to produce a fully detailed drawing later. The sketch is rough by definition, while a finished drawing has had the time and care to add detail that a sketch skips.
The words can also branch off in their own directions. Sketch can mean a short comic scene in a show, as in a sketch about airport security, and informally something that looks suspicious or shady. Drawing can also refer to a lottery-style random selection, as in the winning ticket announced at a prize drawing, which has nothing to do with pencils at all.
