threadiness vs slenderness

threadiness and slenderness both are nouns.

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

As nouns, slenderness is a hypernym of threadiness; that is, slenderness is a word with a broader meaning than threadiness:

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

Other hypernyms of threadiness include tenuity, thinness.

threadiness (noun)	slenderness (noun)
The state or quality of consisting of or bearing fibers or filaments.	the quality of being slight or inadequate
	the property of an attractively thin person
	relatively small dimension through an object as opposed to its length or width