Sloop and Sailboat

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

Sailboat and sloop are semantically related in pleasure boat topic. In some cases you can use "Sailboat" instead a noun "Sloop", when it comes to topics like vehicle for water travel.

Sailboat noun - A boat equipped with one or more sails.

Sloop and sailboat are semantically related in boat propelled with wind by sailcloth topic. You can use "Sloop" instead a noun "Sailboat".