jamb vs upright

jamb and upright both are nouns.

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

As nouns, upright is a hypernym of jamb; that is, upright is a word with a broader meaning than jamb:

jamb: upright consisting of a vertical side member of a door or window frame
upright: a vertical structural member as a post or stake

Other hypernyms of jamb include vertical.

jamb (noun)	upright (noun)
upright consisting of a vertical side member of a door or window frame	a piano with a vertical sounding board
	a vertical structural member as a post or stake

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