The waterfall received its name from the frequent presence of rainbows in its spray before the dams were built.

Leopards are very seldom sighted, but their frequent presence has been confirmed by tracks and other signs.

The stone has a gritty texture due to the frequent presence of shell fossils.

At present, about four companies have assured their frequent presence at the port.

This accounts for the frequent presence of wasp larvae in the fruit, and has led to a coevolutionary relationship.