Nouns

(n)upright, verticala vertical structural member as a post or stake“the ball sailed between the uprights”
(n)upright, upright pianoa piano with a vertical sounding board

Adjectives

(s)upright, unslopedin a vertical position; not sloping“an upright post”
(s)good, just, uprightof moral excellence“a genuinely good person”, “a just cause”, “an upright and respectable man”
(a)erect, vertical, uprightupright in position or posture“an erect stature”, “erect flower stalks”, “for a dog, an erect tail indicates aggression”, “a column still vertical amid the ruins”, “he sat bolt upright”