Poop deck and Weather deck

Poop deck noun - An exposed partial weather deck on the stern superstructure of a ship.

Weather deck and poop deck are semantically related. In some cases you can use "Weather deck" instead a noun phrase "Poop deck".

Weather deck noun - Upper deck having no overhead protection from the weather, but sheltering the deck below.

Poop deck and weather deck are semantically related. Sometimes you can replace phrase "Poop deck" with "Weather deck", this phrases are similar.