Openside vs. Blindside: What's the Difference?

Openside and Blindside Definitions
Openside
(rugby) The space on the side of the pitch with the larger distance between the breakdown/set piece and the touchline.
Blindside
To hit or attack on or from the blind side.
Openside
(rugby union) openside flanker
The openside packs down at the scrum on the openside.
Blindside
To catch or take unawares, especially with harmful or detrimental results
The news blindsided us.
Blindside
(automotive) A driver's field of blindness around an automobile; the side areas behind the driver.
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Blindside
(rail transport) A tram/train driver's field of blindness around a tram (trolley/streetcar) or a train; the side areas behind the tram/train driver.
Blindside
(figurative) A person's weak point.
Blindside
(rugby) The space on the side of the pitch with the shorter distance between the breakdown/set piece and the touchline; compare openside.
Blindside
(rugby union) The blindside flanker, a position in rugby union, usually number 6.
The blindside packs down at the scrum on the blindside.
Blindside
(transitive) To attack (a person) on his or her blind side.
The robbers crept out of the forest and blindsided the traveller.
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Blindside
To catch off guard; to take by surprise.
He had completed his plan to develop a new office building, but was blindsided by the sudden drop in real estate values.
Blindside
To attack a person from his blind side; metaphorically, to give a person an unpleasant suprise.
Blindside
Catch unawares, especially with harmful consequences;
The economic downturn blindsided many investors
Blindside
Attack or hit on or from the side where the attacked person's view is obstructed