Two or more things are identical if they look exactly the same. The two men in the photo are identical twins.
A jackal is a small to medium sized close relative of the dog. They are found in Africa, Asia and some parts of Europe. Jackals normally live together in pairs, although they will sometimes form small packs to hunt. They hunt small to medium animals, and will eat dead animals they find. Like household dogs they will also eat fruit and other plants as well as meat.
Nis forNickel (metal)
Scientific name: Ni
Nis forNickel (coin)
A nickel is the slang name for a coin from America or Canada, equivalent to one twentieth of a dollar, or five cents.
An obstacle is something that gets in your way when you are trying to do something or go somewhere.