The difference between Submarine and Underwater

When used as nouns, submarine means a boat that can go underwater, whereas underwater means underlying water or body of water, for example in an aquifer or the deep ocean.

When used as verbs, submarine means to operate or serve on a submarine, whereas underwater means to water or irrigate insufficiently.

When used as adjectives, submarine means undersea, whereas underwater means beneath the surface of the water, or of or pertaining to the region beneath the water surface.

Underwater is also adverb with the meaning: going beneath the surface of the water.

check bellow for the other definitions of Submarine and Underwater

  1. Submarine as an adjective:

    Undersea.

  2. Submarine as an adjective:

    Hidden or undisclosed.

    Examples:

    "a submarine patent"

  3. Submarine as an adjective (baseball):

    Of a pitch, thrown with the hand lower than the elbow.

  1. Submarine as a noun:

    A boat that can go underwater.

  2. Submarine as a noun:

    A kind of sandwich made in a long loaf of bread.

  3. Submarine as a noun (baseball):

    Pitch delivered with an underhand motion.

  4. Submarine as a noun:

    Any submarine plant or animal.

  5. Submarine as a noun (informal):

    A stowaway on a seagoing vessel.

  1. Submarine as a verb (intransitive):

    To operate or serve on a submarine.

  2. Submarine as a verb (transitive):

    To torpedo; to destroy with a sudden sneak attack.

  3. Submarine as a verb (intransitive, sometimes, figurative):

    To sink or submerge oneself.

  1. Underwater as an adjective (not comparable):

    beneath the surface of the water, or of or pertaining to the region beneath the water surface

  2. Underwater as an adjective (nautical):

    beneath the water line of a vessel

  3. Underwater as an adjective (figuratively):

    Under water.

  4. Underwater as an adjective (finance):

    having negative equity; owing more on an asset than its market value

    Examples:

    "We've been underwater on our mortgage ever since the housing crash."

  1. Underwater as an adverb:

    going beneath the surface of the water

  1. Underwater as a noun:

    underlying water or body of water, for example in an aquifer or the deep ocean

  2. Underwater as a noun (fishing):

    A type of lure which lies beneath the water surface.

  1. Underwater as a verb (agriculture, horticulture):

    to water or irrigate insufficiently

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