turbidness vs turbidity

turbidness and turbidity both are nouns.

Word	Noun	Adjective	Verb	Adverb
turbidness	Yes	No	No	No
turbidity	Yes	No	No	No

As nouns, turbidness and turbidity are synonyms defined as:

turbidness and turbidity: muddiness created by stirring up sediment or having foreign particles suspended

turbidness (noun)	turbidity (noun)
muddiness created by stirring up sediment or having foreign particles suspended	muddiness created by stirring up sediment or having foreign particles suspended