Detritus (noun) refers to the remains or remnants of something that has been broken down or destroyed. It can also mean waste or debris.
Example 1: "The abandoned factory was filled with detritus of old machinery and broken windows."
Example 2: "The coastline was littered with detritus from the recent storm."
Example 3: "After the party, the yard was covered in detritus from paper cups and confetti."
Example 4: "The detritus of their failed relationship was scattered throughout the apartment."