To be very plentiful or to exist in large amounts.
Superabound makes people think of having a lot of something, like a big pile of candy or a huge field of flowers.
Examples:
In the garden, flowers superabound.
During the harvest, fruits and vegetables superabound.
In the forest, animals superabound.
At the party, snacks superabound!
In the land of candy, sweets superabound.
In the library, books superabound on every shelf.