depiction vs line drawing

depiction and line drawing both are nouns.

Word	Noun	Adjective	Verb	Adverb
depiction	Yes	No	No	No
line drawing	Yes	No	No	No

As nouns, depiction and line drawing are synonyms defined as:

depiction and line drawing: a drawing of the outlines of forms or objects

Other synonyms of depiction include delineation, limning.

depiction (noun)	line drawing (noun)
representation by drawing or painting etc	a drawing of the outlines of forms or objects
a drawing of the outlines of forms or objects
a representation by picture or portraiture
a graphic or vivid verbal description