finger-paint vs finger-painting

finger-paint is not a noun while finger-painting is a noun.

Word	Noun	Adjective	Verb	Adverb
finger-paint	No	No	Yes	No
finger-painting	Yes	No	No	No

finger-paint (noun)	finger-painting (noun)
	painting by using the fingers to spread the paint
	a painting produced by spreading paint with the fingers

finger-paint (verb)	finger-painting (verb)
apply colors with one's fingers