lagoon

As nouns the difference between gulf and lagoon

is that gulf is a hollow place in the earth; an abyss; a deep chasm or basin while lagoon is a shallow body of water separated from deeper sea by a bar.

As nouns the difference between inlet and lagoon

is that inlet is a body of water let into a coast, such as a bay, cove, fjord or estuary while lagoon is a shallow body of water separated from deeper sea by a bar.

As a verb inlet

is to let in; admit.

As nouns the difference between cataract and lagoon

is that cataract is a waterspout while lagoon is a shallow body of water separated from deeper sea by a bar.

As a noun lagoon

is a shallow body of water separated from deeper sea by a bar.

As an adjective lagunar is

of or pertaining to a lagoon.

As a noun lagoon

is a shallow body of water separated from deeper sea by a bar.

As an adjective lagoonal is

of or pertaining to a lagoon, especially one behind a coral reef.