tracing (n.)
- carbon
 - cartoon
 - charcoal
 - chiaroscuro
 - companion
 - copy
 - crayon
 - delineation
 - design
 - diagram
 - doodle
 - double
 - draft
 - drawing
 - duplicate
 - duplication
 - effigy
 - fellow
 - fiche
 - graph
 - icon
 - idol
 - image
 - likeness
 - manifold
 - match
 - mate
 - microfiche
 - miniature
 - model
 - pastel
 - pen-and-ink
 - photograph
 - picture
 - portrait
 - recording
 - reduplication
 - reflection
 - reproduction
 - resemblance
 - rubbing
 - semblance
 - shadow
 - silhouette
 - similitude
 - simulacrum
 - sinopia
 - sketch
 - study
 - tenor
 - trace
 - transcript
 - transcription
 - transfer
 - twin
 - vignette
 - xerography