schematic vs schema

schematic and schema both are nouns.

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

schematic (noun)	schema (noun)
diagram of an electrical or mechanical system	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

schematic (adjective)	schema (adjective)
represented in simplified or symbolic form