upright vs stile

upright and stile both are nouns.

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

As nouns, stile is a hyponym of upright; that is, stile is a word with a more specific, narrower meaning than upright:

Other hyponyms of upright include column, pillar, jamb, post, scantling, stud, scape, shaft.

upright (noun)	stile (noun)
a piano with a vertical sounding board	an upright that is a member in a door or window frame
a vertical structural member as a post or stake

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