demonstrate vs demonstration

demonstrate is not a noun while demonstration is a noun.

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

demonstrate (noun)	demonstration (noun)
	a show or display; the act of presenting something to sight or view
	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

demonstrate (verb)	demonstration (verb)
establish the validity of something, as by an example, explanation or experiment
provide evidence for; stand as proof of; show by one's behavior, attitude, or external attributes
give an exhibition of to an interested audience
march in protest; take part in a demonstration