"Toad" is a subjective term rooted solely in common names. All toads are frogs but not all frogs are toads. It is kind of like everybody who lives in Virginia is an American, but not everybody who lives in America are Virginians. It is not incorrect to call a toad a frog, as this is what most scientists are starting to do anyway.
The frogs of the family Ranidae are considered "true frogs" (Leopard frogs, bullfrogs) because they live in close association with standing water. The frogs of the families Hylidae (tree frogs) and Bufonidae ("toads"
are especially resistant to desiccation, and "live away from water "as you describe. Note that there are other toads that are not in that family. Of course they always have to have access to moisture in some form, in captivity this must be at least a dish of dechlorinated and clean water.
If you are looking to get an amphibian as a pet, the best beginner pet is a toad. Usually they will be either Fowler's, Woodhouses or American toads. They are especially hardy, cute, and easy to care for relative to other amphibians. A well taken care of frogs can live at least 10 years, so plan for the future. A toad in captivity can thrive off of a diet of vitamin and calcium supplemented crickets and earthworms. One can live comfortably in a 10 gallon tank, and the best substrate is coconut fiber.
I would also like to add that if you plan on having an amphibian as a pet, you should know that they are a hands-off pet. Although toads can withstand handling much more than any other group of frogs they should not be handled unless it is necessary. There are lots of web sites available describing the care of frogs and toads, make sure you do plenty of research before you get one. And if you live in an area where toads are native, it is better to collect one your self as a juvenile or a tadpole, rather than buying one from a pet store that potentially could be sick and was collected in an unsustainable manner. Basically, there is a whole chain of people making money off of the collection of wild animals. You would benefit the species by collecting one of your own.
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...the oldest task in human history: to live on a piece of land without spoiling it."
Aldo Leopold (1938)
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Calvin and Hobbes (Scientific Progress Goes 'Boink', 1991)