outline vs summary

outline and summary both are nouns.

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

As nouns, summary is a hypernym of outline; that is, summary is a word with a broader meaning than outline:

Other hypernyms of outline include sum-up.

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

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

outline (verb)	summary (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