outline vs apercu

outline and apercu both are nouns.

Word	Noun	Adjective	Verb	Adverb
outline	Yes	No	Yes	No
apercu	Yes	No	No	No

As nouns, apercu is a hyponym of outline; that is, apercu is a word with a more specific, narrower meaning than outline:

Other hyponyms of outline include brief, epitome.

outline (noun)	apercu (noun)
a schematic or preliminary plan	a short synopsis
a sketchy summary of the main points of an argument or theory
the line that appears to bound an object

outline (verb)	apercu (verb)
describe roughly or briefly or give the main points or summary of
trace the shape of
draw up an outline or sketch for something