intensity vs vividness

intensity and vividness both are nouns.

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

As nouns, intensity and vividness are synonyms defined as:

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

Other synonyms of intensity include chroma, saturation.

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