demo vs exemplification

demo and exemplification both are nouns.

Word	Noun	Adjective	Verb	Adverb
demo	Yes	No	Yes	No
exemplification	Yes	No	No	No

As nouns, exemplification is a hyponym of demo; that is, exemplification is a word with a more specific, narrower meaning than demo:

Other hyponyms of demo include display, show, expression, manifestation, reflection, reflexion, illustration.

demo (noun)	exemplification (noun)
a visual presentation showing how something works	a representational or typifying form or model
	showing by example

demo (verb)	exemplification (verb)
give an exhibition of to an interested audience