What is the name of light coloured root vegetable with a sweet taste?

There are several light-colored root vegetables with a sweet taste. To help me narrow it down, could you tell me:

* Where are you from? Different regions have different common root vegetables.

* What is the shape of the vegetable? Is it long and thin, round, or something else?

* What is the texture of the vegetable? Is it firm, soft, or starchy?

With more information, I can give you a more specific answer!