What context can I use each word in?
Learn when and how to use these words with these examples!
silt
Example
The river was filled with silt after the heavy rain. [silt: noun]
Example
The silt from the riverbed made the water murky and difficult to see through. [silt: noun]
sludge
Example
The factory produced large amounts of sludge that needed to be disposed of properly. [sludge: noun]
Example
The sludge at the bottom of the pond was full of decomposing plant matter. [sludge: noun]
Good things to know
Which word is more common?
Silt is more commonly used than sludge in everyday language, especially in geological and agricultural contexts. Sludge is more specific to industrial and environmental contexts.
What’s the difference in the tone of formality between silt and sludge?
Both silt and sludge are relatively formal words, but sludge may be considered more technical due to its association with industrial and environmental contexts.