oceanaut

As nouns the difference between terms and oceanaut

is that terms is while oceanaut is an explorer in a submarine.

Aquanaut is a see also of oceanaut.

As nouns the difference between aquanaut and oceanaut

is that aquanaut is an underwater explorer while oceanaut is an explorer in a submarine.

As an adjective scientific

is of, or having to do with science.

As a noun oceanaut is

an explorer in a submarine.

As nouns the difference between underwater and oceanaut

is that underwater is underlying water or body of water, for example in an aquifer or the deep ocean while oceanaut is an explorer in a submarine.

As an adjective underwater

is (not comparable) beneath the surface of the water, or of or pertaining to the region beneath the water surface.

As an adverb underwater

is going beneath the surface of the water.

As a verb underwater

is (agriculture|horticulture) to water or irrigate insufficiently.

As nouns the difference between submarine and oceanaut

is that submarine is a boat that can go underwater while oceanaut is an explorer in a submarine.

As an adjective submarine

is undersea.

As a verb submarine

is to operate or serve on a submarine.

As nouns the difference between explorer and oceanaut

is that explorer is one who explores something while oceanaut is an explorer in a submarine.