transparency vs clearness

transparency and clearness both are nouns.

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

As nouns, clearness is a hypernym of transparency; that is, clearness is a word with a broader meaning than transparency:

Other hypernyms of transparency include clarity, uncloudedness.

transparency (noun)	clearness (noun)
picture consisting of a positive photograph or drawing on a transparent base; viewed with a projector	free from obscurity and easy to understand; the comprehensibility of clear expression
the quality of being clear and transparent	the quality of clear water
permitting the free passage of electromagnetic radiation