Catamaran and Sloop

Catamaran noun - A sailboat with two parallel hulls held together by single deck.

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

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

Catamaran and sloop are semantically related in vehicle for water travel topic. You can use "Catamaran" instead a noun "Sloop", if it concerns topics such as boat propelled with wind by sailcloth.