petiteness vs diminutiveness

petiteness and diminutiveness both are nouns.

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

As nouns, petiteness and diminutiveness are synonyms defined as:

Other synonyms of petiteness include minuteness, tininess, weeness.

petiteness (noun)	diminutiveness (noun)
the property of being very small in size	the property of being very small in size