thickness vs thinness

thickness and thinness both are nouns.

Word	Noun	Adjective	Verb	Adverb
thickness	Yes	No	No	No
thinness	Yes	No	No	No

thickness (noun)	thinness (noun)
the dimension through an object as opposed to its length or width	the property of having little body fat
resistance to flow	relatively small dimension through an object as opposed to its length or width
used of a line or mark	a consistency of low viscosity
indistinct articulation	the property of being very narrow or thin
	the property of being scanty or scattered; lacking denseness
	The property of lacking substance or strength.