obstruction vs stymie

obstruction and stymie both are nouns.

Word	Noun	Adjective	Verb	Adverb
obstruction	Yes	No	No	No
stymie	Yes	No	Yes	No

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

obstruction: something immaterial that stands in the way and must be circumvented or surmounted
stymie: a thwarting and distressing situation

Other hyponyms of obstruction include barrier, roadblock, hang-up, hitch, rub, snag, hurdle, stymy.

obstruction (noun)	stymie (noun)
getting in someone's way	a thwarting and distressing situation
the act of obstructing	a situation in golf where an opponent's ball blocks the line between your ball and the hole
any structure that makes progress difficult
something immaterial that stands in the way and must be circumvented or surmounted
the physical condition of blocking or filling a passage with an obstruction

obstruction (verb)	stymie (verb)
	hinder or prevent the progress or accomplishment of