summary vs outline

summary and outline both are nouns.

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

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

summary (noun)	outline (noun)
a brief statement that presents the main points in a concise form	a schematic or preliminary plan
	a sketchy summary of the main points of an argument or theory
	the line that appears to bound an object

summary (adjective)	outline (adjective)
briefly giving the gist of something
performed speedily and without formality

summary (verb)	outline (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