Ark and Sloop

Ark noun - A boat built by Noah to save his family and animals from the flood.

Sloop and ark are semantically related In some cases you can use "Sloop" instead a noun "Ark".

Sloop noun - A sailing vessel with a single mast set about one third of the boat's length aft of the bow.

Ark and sloop are semantically related in vehicle for water travel topic. Sometimes you can use "Ark" instead a noun "Sloop".