closure vs obstruction

closure and obstruction both are nouns.

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

As nouns, obstruction is a hypernym of closure; that is, obstruction is a word with a broader meaning than closure:

As nouns, obstruction is a hypernym of closure; that is, obstruction is a word with a broader meaning than closure:

Other hypernyms of closure include impediment, impedimenta, obstructer, obstructor.

closure (noun)	obstruction (noun)
termination of operations	getting in someone's way
the act of blocking	the act of obstructing
approaching a particular destination; a coming closer; a narrowing of a gap	any structure that makes progress difficult
an obstruction in a pipe or tube	something immaterial that stands in the way and must be circumvented or surmounted
a Gestalt principle of organization holding that there is an innate tendency to perceive incomplete objects as complete and to close or fill gaps and to perceive asymmetric stimuli as symmetric	the physical condition of blocking or filling a passage with an obstruction
something settled or resolved; the outcome of decision making
a rule for limiting or ending debate in a deliberative body

closure (verb)	obstruction (verb)
terminate debate by calling for a vote