scantiness vs scantness

scantiness and scantness both are nouns.

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

As nouns, scantiness and scantness are synonyms defined as:

Other synonyms of scantiness include exiguity, leanness, meagerness, meagreness, poorness.

scantiness (noun)	scantness (noun)
the quality of being meager	the quality of being meager
Of a garment, the property of being very small, light, or revealing.