scantness vs sparsity

scantness and sparsity both are nouns.

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

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

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

scantness (noun)	sparsity (noun)
the quality of being meager	the property of being scanty or scattered; lacking denseness