Boondoggle and Confidence trick

Boondoggle noun - Work of little or no value done merely to look busy.

Confidence trick and boondoggle are semantically related. In some cases you can use "Confidence trick" instead a noun "Boondoggle".

Confidence trick noun - A swindle in which you cheat at gambling or persuade a person to buy worthless property.

Boondoggle and confidence trick are semantically related. Sometimes you can use "Boondoggle" instead a noun phrase "Confidence trick".