upright vs rearing

upright and rearing both are nouns.

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

upright (noun)	rearing (noun)
a piano with a vertical sounding board	helping someone grow up to be an accepted member of the community
a vertical structural member as a post or stake	the properties acquired as a consequence of the way you were treated as a child

upright (adjective)	rearing (adjective)
upright in position or posture	rearing on left hind leg with forelegs elevated and head usually in profile
of moral excellence
in a vertical position; not sloping