Sedimentary rocks are often called clastic rocks. This term refers to rocks that are formed from fragments of other rocks, minerals, or organic matter.

Here's a breakdown:

* Sedimentary rocks: Rocks formed from the accumulation and cementation of sediments.

* Clastic sedimentary rocks: A type of sedimentary rock specifically formed from fragments (clasts) of other rocks.

While not all sedimentary rocks are clastic (for example, chemical sedimentary rocks like limestone and evaporites are not), the term "clastic" is commonly used to describe many sedimentary rocks.