The difference between Dust devil and Sand pillar
When used as nouns, dust devil means a small atmospheric vortex appearing in clear, dry conditions, made visible by swirling dust picked up from the ground, whereas sand pillar means a dust devil.
check bellow for the other definitions of Dust devil and Sand pillar
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Dust devil as a noun:
A small atmospheric vortex appearing in clear, dry conditions, made visible by swirling dust picked up from the ground.
Examples:
"A dust devil may look harmless, but a large one can overturn a car."
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Sand pillar as a noun (meteorology):
A dust devil; a whirling, columnar vortex of sand occasionally seen in desert regions.