Obstruction
Part of speech: noun
Definition: The act of obstructing, or state of being obstructed. That which obstructs or impedes; an obstacle; an impediment; a hindrance. The condition of having the natural powers obstructed in their usual course; the arrest of the vital functions; death.
Example sentence: There are occasions when obstruction in Parliament brings greater benefits to the country.
Obstacle
Part of speech: noun
Definition: Something that impedes, stands in the way of, or holds up progress
Example sentence: A lot of people give up just before they're about to make it. You know you never know when that next obstacle is going to be the last one.