faultiness vs lameness

faultiness and lameness both are nouns.

Word	Noun	Adjective	Verb	Adverb
faultiness	Yes	No	No	No
lameness	Yes	No	No	No

As nouns, lameness is a hyponym of faultiness; that is, lameness is a word with a more specific, narrower meaning than faultiness:

Other hyponyms of faultiness include bugginess, sickness, dysfunctionality.

faultiness (noun)	lameness (noun)
the state of being defective	disability of walking due to crippling of the legs or feet
	an imperfection or defectiveness