What is the difference between widget & gadget in Windows?

Motorola,

 You are New to the city,You don't have any Gadgets,you have   only address on paper piece.You are almost nearer to your destination, You have asked one man and he replied saying "Go straight and take Right(Dead End)".After moving some distance you have asked another person and he replied saying "Go straight and take Left (Dead End).And finally question here is As a tester which path you can choose and why? 

Bally Technologies, SSS,

gadget in x_windows is ?

Siemens,

What are the different types of gadgets present in the wordpress dashboard?