diagramming vs schematisation

diagramming and schematisation both are nouns.

Word	Noun	Adjective	Verb	Adverb
diagramming	Yes	No	No	No
schematisation	Yes	No	No	No

As nouns, diagramming and schematisation are synonyms defined as:

diagramming and schematisation: providing a chart or outline of a system

Other synonyms of diagramming include schematization.

diagramming (noun)	schematisation (noun)
providing a chart or outline of a system	providing a chart or outline of a system
	the act of reducing to a scheme or formula