uprightness vs upright

uprightness and upright both are nouns.

Word	Noun	Adjective	Verb	Adverb
uprightness	Yes	No	No	No
upright	Yes	Yes	No	No

uprightness (noun)	upright (noun)
righteousness as a consequence of being honorable and honest	a piano with a vertical sounding board
position at right angles to the horizon	a vertical structural member as a post or stake
the property of being upright in posture

uprightness (adjective)	upright (adjective)
	upright in position or posture
	of moral excellence
	in a vertical position; not sloping