A boomerang is a curved piece of wood used that was originally used by Australian Aborigines as a weapon or for sport. If you throw a boomerang right, it will travel around in a loop and come back to you.
Other cultures outside of Australia have also developed boomerangs, but theirs do not return when you throw them.
Bis forBorder collie
Border collies are a breed of herding dog originally from an area near the border of Scotland and England. They are thought to be the most intelligent dog, and the best herder. They are extremely energetic and if they are going to be kept as a pet not a working dog will need lots of regular exercise, stimulation and be very well trained. They are not well suited to families with small children.
A bore is a kind of drilled well. Water is drawn up from underground through the bore hole by some kind of pump. The pump can be an electric pump, a hand pump, or a wind driven pump.
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You are bored when you have nothing to do, or you don't want to do anything. The man in the picture is bored.
You borrow something when you take it from someone else with their permission and return it to them when you have finished with it.
People often borrow books from a library.
A boss is someone who employs other people, or who manages them and tells them what to do. Bosses can be male or female.