Stoppage
That is the correct spelling of "stoppage" (cessation of an action).
If it is a grease, soil or other soft stoppage Water Jetting is the way to restore full flow If the stoppage is hard such as roots /rags then snaking it the only option
A moratorium is a stoppage of pause (in this, of deep water, offshore oil drilling). It is difficult to view a stoppage - since nothing happens when a process is on pause or stopped. ;)
Stoppage down stream
Broken sewer line /stoppage
Partical stoppage / Bad venting
Partical stoppage. Bad Venting , Refill tube not working
You have a particle stoppage down stream or poor venting
Water Jetting ,snaking depending on what the stoppage is
The homophone for a stoppage for a time is "pause."
The water assists in chopping up the items being chopped and washes them down the drain to prevent stoppage.