preciseness vs pellucidity

preciseness and pellucidity both are nouns.

Word	Noun	Adjective	Verb	Adverb
preciseness	Yes	No	No	No
pellucidity	Yes	No	No	No

As nouns, pellucidity is a hypernym of preciseness; that is, pellucidity is a word with a broader meaning than preciseness:

preciseness: clarity as a consequence of precision
pellucidity: free from obscurity and easy to understand; the comprehensibility of clear expression

Other hypernyms of preciseness include clarity, clearness, limpidity, lucidity, lucidness.

preciseness (noun)	pellucidity (noun)
the quality of being reproducible in amount or performance	passing light without diffusion or distortion
clarity as a consequence of precision	free from obscurity and easy to understand; the comprehensibility of clear expression