vividness vs intensity

vividness and intensity both are nouns.

Word	Noun	Adjective	Verb	Adverb
vividness	Yes	No	No	No
intensity	Yes	No	No	No

As nouns, vividness and intensity are synonyms defined as:

vividness and intensity: chromatic purity: freedom from dilution with white and hence vivid in hue

Other synonyms of vividness include chroma, saturation.

vividness (noun)	intensity (noun)
chromatic purity: freedom from dilution with white and hence vivid in hue	high level or degree; the property of being intense
interest and variety and intensity	chromatic purity: freedom from dilution with white and hence vivid in hue
	the magnitude of sound (usually in a specified direction)
	the amount of energy transmitted (as by acoustic or electromagnetic radiation)