smallness vs littleness

smallness and littleness both are nouns.

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

As nouns, smallness and littleness are synonyms defined as:

smallness and littleness: the property of having a relatively small size

As nouns, smallness and littleness are synonyms defined as:

Other synonyms of smallness include pettiness.

As nouns, smallness and littleness are synonyms defined as:

smallness and littleness: the property of having relatively little strength or vigor

smallness (noun)	littleness (noun)
the property of having a relatively small size	the property of having a relatively small size
lack of generosity in trifling matters	lack of generosity in trifling matters
the property of being a relatively small amount	the property of having relatively little strength or vigor
the property of having relatively little strength or vigor
The quality of being minor in influence, power, or rank.