diagramming vs diagram

diagramming and diagram both are nouns.

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

diagramming (noun)	diagram (noun)
providing a chart or outline of a system	a drawing intended to explain how something works; a drawing showing the relation between the parts

diagramming (verb)	diagram (verb)
	make a schematic or technical drawing that shows interactions among variables or how something is constructed