transparentness vs transparency

transparentness and transparency both are nouns.

Word	Noun	Adjective	Verb	Adverb
transparentness	Yes	No	No	No
transparency	Yes	No	No	No

As nouns, transparentness and transparency are synonyms defined as:

transparentness and transparency: the quality of being clear and transparent

Other synonyms of transparentness include transparence.

transparentness (noun)	transparency (noun)
the quality of being clear and transparent	picture consisting of a positive photograph or drawing on a transparent base; viewed with a projector
	the quality of being clear and transparent
	permitting the free passage of electromagnetic radiation