stymy vs bottleneck

stymy and bottleneck both are nouns.

Word	Noun	Adjective	Verb	Adverb
stymy	Yes	No	Yes	No
bottleneck	Yes	No	Yes	No

As verbs, bottleneck is a hyponym of stymy; that is, bottleneck is a word with a more specific, narrower meaning than stymy:

Other hyponyms of stymy include stonewall, filibuster, check, hang.

stymy (noun)	bottleneck (noun)
a thwarting and distressing situation	the narrow part of a bottle near the top
a situation in golf where an opponent's ball blocks the line between your ball and the hole	a narrowing that reduces the flow through a channel

stymy (verb)	bottleneck (verb)
hinder or prevent the progress or accomplishment of	become narrow, like a bottleneck
	slow down or impede by creating an obstruction