tenuity vs threadiness

tenuity and threadiness both are nouns.

Word	Noun	Adjective	Verb	Adverb
tenuity	Yes	No	No	No
threadiness	Yes	No	No	No

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

tenuity: relatively small dimension through an object as opposed to its length or width
threadiness: The state or quality of consisting of or bearing fibers or filaments.

tenuity (noun)	threadiness (noun)
a rarified quality	The state or quality of consisting of or bearing fibers or filaments.
the quality of lacking intensity or substance
relatively small dimension through an object as opposed to its length or width