What context can I use each word in?
Learn when and how to use these words with these examples!
shale
Example
The shale formations in this area contain a lot of natural gas. [shale: noun]
Example
The shale layer was easily split apart by the geologist. [shale: adjective]
claystone
Example
The claystone deposits in this area are ideal for making bricks. [claystone: noun]
Example
The claystone layer was much harder to break apart than the shale layer. [claystone: adjective]
Good things to know
Which word is more common?
Shale is more commonly used than claystone in everyday language, especially in the context of oil and gas exploration. Claystone is less common but is still an important rock type in construction and sculpture.
What’s the difference in the tone of formality between shale and claystone?
Both shale and claystone are relatively formal terms used in geology and related fields. However, shale may be slightly more common and versatile in different contexts.
