Origin: Latin suffix -ment
Catchment has 3 different meanings across 1 category:
a structure in which water is collected (especially a natural drainage area)
"The new rainwater catchment system on the roof will provide enough water to fill our garden hoses every summer."
Any structure or land feature which catches and holds water; the collection of such water.
"The new dam was built to create a large catchment area that would store enough rainwater for the entire village during dry seasons."
To divide into catchment areas.
"The city planners divided the entire region into separate catchment areas to manage water runoff more efficiently."