schema vs outline

schema and outline both are nouns.

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

As nouns, schema and outline are synonyms defined as:

Other synonyms of schema include scheme.

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

schema (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