delineation vs line drawing

delineation and line drawing both are nouns.

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

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

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

Other synonyms of delineation include depiction, limning.

delineation (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 graphic or vivid verbal description