obstruction vs obstacle

obstacle vs obstruction

obstruction and obstacle both are nouns.

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

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

obstruction: any structure that makes progress difficult
obstacle: an obstruction that stands in the way (and must be removed or surmounted or circumvented)

Other hyponyms of obstruction include bar, barrier, blockade, block, blockage, closure, occlusion, stop, stoppage, encumbrance, hinderance, hindrance, hitch, incumbrance, interference, preventative, preventive, tumbler.

As nouns, obstruction and obstacle are synonyms defined as:

obstruction and obstacle: something immaterial that stands in the way and must be circumvented or surmounted

obstruction (noun)	obstacle (noun)
getting in someone's way	an obstruction that stands in the way (and must be removed or surmounted or circumvented)
the act of obstructing	something immaterial that stands in the way and must be circumvented or surmounted
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

Difference between obstruction and obstacle

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