spareness vs thinness

spareness and thinness both are nouns.

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

As nouns, spareness and thinness are synonyms defined as:

spareness and thinness: the property of being scanty or scattered; lacking denseness

Other synonyms of spareness include sparseness, sparsity.

As nouns, spareness and thinness are synonyms defined as:

Other synonyms of spareness include leanness.

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