lumpiness vs consistency

lumpiness and consistency both are nouns.

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

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

Other hypernyms of lumpiness include body, consistence, substance.

lumpiness (noun)	consistency (noun)
The property of being full of lumps, not being smooth.	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