leanness vs scantiness

leanness and scantiness both are nouns.

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

As nouns, leanness and scantiness are synonyms defined as:

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

leanness (noun)	scantiness (noun)
the property of having little body fat	the quality of being meager
the quality of being meager	Of a garment, the property of being very small, light, or revealing.