exactness vs minuteness

exactness and minuteness both are nouns.

Word	Noun	Adjective	Verb	Adverb
exactness	Yes	No	No	No
minuteness	Yes	No	No	No

As nouns, minuteness is a hyponym of exactness; that is, minuteness is a word with a more specific, narrower meaning than exactness:

Other hyponyms of exactness include preciseness, precision, trueness.

exactness (noun)	minuteness (noun)
the quality of being exact	the property of being very small in size
	great precision; painstaking attention to details