saturation vs chroma

saturation and chroma both are nouns.

Word	Noun	Adjective	Verb	Adverb
saturation	Yes	No	No	No
chroma	Yes	No	No	No

As nouns, saturation and chroma are synonyms defined as:

saturation and chroma: chromatic purity: freedom from dilution with white and hence vivid in hue

Other synonyms of saturation include intensity, vividness.

saturation (noun)	chroma (noun)
the act of soaking thoroughly with a liquid	chromatic purity: freedom from dilution with white and hence vivid in hue
chromatic purity: freedom from dilution with white and hence vivid in hue
the process of totally saturating something with a substance
a condition in which a quantity no longer responds to some external influence