What context can I use each word in?
Learn when and how to use these words with these examples!
goop
Example
The mechanic had to clean the goop off the engine before he could fix it. [goop: noun]
Example
She applied a goop of sunscreen on her face before going out in the sun. [goop: noun]
sludge
Example
The city had to clean the sludge from the sewer pipes to prevent blockages. [sludge: noun]
Example
The factory had to dispose of the sludge produced during the manufacturing process. [sludge: noun]
Good things to know
Which word is more common?
Sludge is more commonly used than goop in everyday language, especially in the context of waste materials and industrial processes. Goop is less common and is mainly used in household or personal care products.
What’s the difference in the tone of formality between goop and sludge?
Both goop and sludge are informal words and are not typically used in formal contexts.