viscousness vs consistency

viscousness and consistency both are nouns.

Word	Noun	Adjective	Verb	Adverb
viscousness	Yes	No	No	No
consistency	Yes	No	No	No

As nouns, consistency is a hypernym of viscousness; that is, consistency is a word with a broader meaning than viscousness:

Other hypernyms of viscousness include body, consistence, substance.

viscousness (noun)	consistency (noun)
resistance of a liquid to shear forces (and hence to flow)	the property of holding together and retaining its shape
	(logic) an attribute of a logical system that is so constituted that none of the propositions deducible from the axioms contradict one another
	a harmonious uniformity or agreement among things or parts
	logical coherence and accordance with the facts