exhibition vs demonstration

exhibition and demonstration both are nouns.

Word	Noun	Adjective	Verb	Adverb
exhibition	Yes	No	No	No
demonstration	Yes	No	No	No

As nouns, demonstration is a hypernym of exhibition; that is, demonstration is a word with a broader meaning than exhibition:

exhibition: the act of exhibiting
demonstration: a show or display; the act of presenting something to sight or view

Other hypernyms of exhibition include presentation, presentment, fair, fair.

exhibition (noun)	demonstration (noun)
the act of exhibiting	a show or display; the act of presenting something to sight or view
a collection of things (goods or works of art etc.) for public display	a public display of group feelings (usually of a political nature)
	a show of military force or preparedness
	a visual presentation showing how something works
	proof by a process of argument or a series of proposition proving an asserted conclusion