straightness vs honesty

straightness and honesty both are nouns.

Word	Noun	Adjective	Verb	Adverb
straightness	Yes	No	No	No
honesty	Yes	No	No	No

As nouns, honesty is a hypernym of straightness; that is, honesty is a word with a broader meaning than straightness:

Other hypernyms of straightness include honestness.

straightness (noun)	honesty (noun)
a sexual attraction to (or sexual relations with) persons of the opposite sex	the quality of being honest
freedom from crooks or curves or bends or angles	southeastern European plant cultivated for its fragrant purplish flowers and round flat papery silver-white seedpods that are used for indoor decoration
(of hair) lack of a tendency to curl
having honest intentions
trueness of course toward a goal