schematic vs conventional

schematic is a noun but conventional is not a noun.

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

As adjectives, schematic and conventional are synonyms defined as:

Other synonyms of schematic include formal.

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

schematic (adjective)	conventional (adjective)
represented in simplified or symbolic form	following accepted customs and proprieties
	unimaginative and conformist
	(weapons) using energy for propulsion or destruction that is not nuclear energy
	rigidly formal or bound by convention
	represented in simplified or symbolic form
	conforming with accepted standards
	in accord with or being a tradition or practice accepted from the past