petiteness vs littleness

petiteness and littleness both are nouns.

Word	Noun	Adjective	Verb	Adverb
petiteness	Yes	No	No	No
littleness	Yes	No	No	No

As nouns, littleness is a hypernym of petiteness; that is, littleness is a word with a broader meaning than petiteness:

Other hypernyms of petiteness include smallness.

petiteness (noun)	littleness (noun)
the property of being very small in size	the property of having a relatively small size
	lack of generosity in trifling matters
	the property of having relatively little strength or vigor