If people or animals are alive, they are not dead.
She does not know if he is alive or dead.
They kept her alive on a life support machine.
If a place is alive with something, there are a lot of people or things there
and it seems busy or exciting: The river was alive with birds.
If something is exciting, it makes you feel very happy or enthusiastic:
The race itself is very exciting.
A rich person has a lot of money or valuable possessions -ценные владения.
Their one aim in life is to get rich.
If something is rich in a useful or valuable substance or
is a rich source of it, it contains a lot of it.
Liver and kidney are particularly rich in vitamin A.