exactitude vs trueness

exactitude and trueness both are nouns.

Word	Noun	Adjective	Verb	Adverb
exactitude	Yes	No	No	No
trueness	Yes	No	No	No

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

Other hyponyms of exactitude include minuteness, preciseness, precision.

exactitude (noun)	trueness (noun)
the quality of being exact	exactness of adjustment
	the quality of being loyal
	conformity to reality or actuality