A large mass of earth and rock moving downward on a slope
Examples:
The earthquake triggered a landslide.Votes poured in, predicting a landslide victory.Heavy rains caused a landslide on the mountain trail.
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Avalanche
/ˈævəlɑːntʃ/
A sudden, large amount of snow and ice falling down a mountain or a large amount of something suddenly coming or occurring.
Examples:
Two people survived being swept up in an avalanche.Rescuers worked tirelessly after the avalanche struck.The village was buried under a sudden avalanche of snow.
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Ways to tell them apart:
Both terms describe a large movement of material, but landslides involve soil, rock, and debris, while avalanches involve snow.
Landslides typically occur in areas with steep slopes and can be triggered by heavy rain, earthquakes, or volcanic activity.
Avalanches occur in mountainous regions, especially after a snowfall when layers of snowpack become unstable.
Landslides can occur underwater as well, known as submarine landslides, while avalanches are predominantly a surface event.
An avalanche generally moves faster than a landslide due to the slippage of snow layers.