diminutiveness vs weeness

diminutiveness and weeness both are nouns.

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

As nouns, diminutiveness and weeness are synonyms defined as:

Other synonyms of diminutiveness include minuteness, petiteness, tininess.

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