Question

Define the term related to sanitation like as water pipe rain water pipe

Answer 1

a toilet, sink, or drain backs up, or if it is backed up, water cannot flow through it because something is blocking it

blockage

 noun

something that blocks a tube or pipe

carry

 verb

if a road, pipe, or wire carries something along it, that thing moves or flows along it

cesspit

 noun

a large covered hole or container in the ground for collecting the liquid and solid waste that flows from a building

clog

 verb

to block something such as a pipe, tube, or passage, or to become blocked, so that nothing can get through

conduit

 noun

a pipe or passage that water flows through to go from one place to another

culvert

 noun

a very wide pipe that carries water under a road or railway line

cutoff

 noun

a part of a pipe that can be closed to stop a gas or liquid flowing

downpipe

 noun

british a pipe on the side of a building that carries rainwater down from the roof to the ground

downspout

 noun

american a downpipe

drainage

 noun

a system of pipes and passages that take awaywater or waste liquid from an area

drainage

 noun

the process of taking away water or waste liquidfrom somewhere

drainpipe

 noun

a pipe on the side of a building that carries rainwater down from the roof to the ground

drainpipe

 noun

a pipe that takes away waste water or liquid from inside a building

Answer 2

A rainwater pipe is a pipe that is used to direct rainwater away from a building, typically from roof guttering to a drainage system.
And directly connected to a drain discharging into a surface is called water pipe.