Dinghy, skiff and keelboat are the names of three kinds of sailing boats.
At the Olympics there are events in which one person sails alone, and other events for two sailors.
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Sailing was an event at the 1900 Paris Olympic Games, then again in 1908, and has been in every Olympics since then.
At the Los Angeles 2028 Games there will 330 sailing events. Sole are for men only, some are for women only, and some are for both men and women together.
Boardsailing or windsurfing
Windsurfing is the name used for kite boarding or boardsailing
Read the kidcyber page about boardsailing which is part of the Olympic sailing program in 2018