outline vs schema

outline and schema both are nouns.

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

As nouns, outline and schema are synonyms defined as:

Other synonyms of outline include scheme.

outline (noun)	schema (noun)
a schematic or preliminary plan	a schematic or preliminary plan
a sketchy summary of the main points of an argument or theory	an internal representation of the world; an organization of concepts and actions that can be revised by new information about the world
the line that appears to bound an object

outline (verb)	schema (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