The difference between Barrage balloon and Dirigible
When used as nouns, barrage balloon means a tethered balloon, attached to the ground with a metal cable, intended to deter low-flying enemy aircraft, whereas dirigible means a self-propelled airship that can be steered.
Dirigible is also adjective with the meaning: steerable.
check bellow for the other definitions of Barrage balloon and Dirigible
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Barrage balloon as a noun:
A tethered balloon, attached to the ground with a metal cable, intended to deter low-flying enemy aircraft; used especially in World War II.
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Dirigible as a noun:
A self-propelled airship that can be steered
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Dirigible as an adjective:
steerable