scantness vs spareness

scantness and spareness both are nouns.

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

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

Other hyponyms of scantness include wateriness, abstemiousness, sparseness, sparsity, thinness, thinness.

scantness (noun)	spareness (noun)
the quality of being meager	the property of being scanty or scattered; lacking denseness
	the property of having little body fat