The difference between Deep and Fast

When used as nouns, deep means the deep part of a lake, sea, etc, whereas fast means a train that calls at only some stations it passes between its origin and destination, typically just the principal stations.

When used as adverbs, deep means deeply, whereas fast means in a firm or secure manner, securely.

When used as adjectives, deep means extending far away from a point of reference, especially downwards. extending far down from the top or surface, whereas fast means firmly or securely fixed in place.

Fast is also interjection with the meaning: short for "stand fast", a warning not to pass between the arrow and the target.

Fast is also verb with the meaning: to restrict one's personal consumption, generally of food, but sometimes other things, in various manners (totally, temporally, by avoiding particular items), often for religious or medical reasons.

check bellow for the other definitions of Deep and Fast

  1. Deep as an adjective (of a, physical distance):

    Extending far away from a point of reference, especially downwards. Extending far down from the top or surface; having its bottom far down. Far in extent in another (non-downwards, but generally also non-upwards) direction away from a point of reference. In a (specified) number of rows or layers. Thick. Voluminous. A long way inside; situated far in or back. # Far from the center of the playing area, near to the boundary of the playing area, either in absolute terms or relative to a point of reference. # A long way forward. # Relatively farther downfield.

    Examples:

    "We hiked into a deep valley between tall mountains."

    "There was a deep layer of dust on the floor; the room had not been disturbed for many years."

    "The shelves are 30 centimetres deep. — They are deep shelves."

    "a crowd three deep along the funeral procession"

    "That cyclist's deep chest allows him to draw more air."

    "to take a deep breath / sigh / drink"

    "'deep into the forest'';  ''deep in the forest"

    "He is fielding at deep mid wicket."

    "She hit a ball into deep center field."

    "a deep volley"

  2. Deep as an adjective (intellectual, social):

    Complex, involved. Profound, having great meaning or import, but possibly obscure or not obvious. To a significant, not superficial, extent. Hard to penetrate or comprehend; profound; intricate; obscure. Of penetrating or far-reaching intellect; not superficial; thoroughly skilled; sagacious; cunning.

    Examples:

    "That is a deep thought!"

    "I just meant to help out a little, but now I'm deep into it."

    "They're deep in discussion."

    "a deep subject or plot"

  3. Deep as an adjective (sound, voice):

    Low in pitch.

    Examples:

    "She has a very deep [[contralto]] voice."

  4. Deep as an adjective (of a color):

    Dark and highly saturated.

    Examples:

    "That's a very deep shade of blue."

  5. Deep as an adjective (sleep):

    Sound, heavy (describing a state of sleep from which one is not easily awoken).

    Examples:

    "He was in a deep sleep."

  6. Deep as an adjective:

    Immersed, submerged (in).

    Examples:

    "'deep in debt;  deep in the mud;  waist-deep in the muddy water"

  7. Deep as an adjective:

    Muddy; boggy; sandy; said of roads.

  1. Deep as an adverb:

    Deeply.

  1. Deep as a noun (literary, with "the"):

    The deep part of a lake, sea, etc.

    Examples:

    "creatures of the deep"

  2. Deep as a noun (literary, with "the"):

    A silent time; quiet isolation.

    Examples:

    "the deep of night"

  3. Deep as a noun (rare):

    A deep shade of colour.

  4. Deep as a noun (US, rare):

    The profound part of a problem.

  5. Deep as a noun (with "the"):

    The sea, the ocean.

  6. Deep as a noun (cricket):

    A fielding position near the boundary.

    Examples:

    "Russell is a safe pair of hands in the deep."

  1. Fast as an adjective (dated):

    Firmly or securely fixed in place; stable.

    Examples:

    "That rope is dangerously loose. Make it fast!"

  2. Fast as an adjective:

    Firm against attack; fortified by nature or art; impregnable; strong.

  3. Fast as an adjective (of people):

    Steadfast, with unwavering feeling. (Now mostly in set phrases like .)

  4. Fast as an adjective:

    Moving with great speed, or capable of doing so; swift, rapid.

    Examples:

    "I am going to buy a fast car."

  5. Fast as an adjective:

    Causing unusual rapidity of play or action.

    Examples:

    "a fast racket, or tennis court; a fast track; a fast billiard table''; ''a fast dance floor"

  6. Fast as an adjective (computing, of a piece of hardware):

    Able to transfer data in a short period of time.

  7. Fast as an adjective:

    Deep or sound (of sleep); fast asleep (of people).

  8. Fast as an adjective (of dyes or colours):

    Not running or fading when subjected to detrimental conditions such as wetness or intense light; permanent.

    Examples:

    "All the washing has come out pink. That red tee-shirt was not fast."

  9. Fast as an adjective (obsolete):

    Tenacious; retentive.

  10. Fast as an adjective (dated):

    Having an extravagant lifestyle or immoral habits.

    Examples:

    "a fast woman"

  11. Fast as an adjective:

    Ahead of the correct time or schedule.

    Examples:

    "There must be something wrong with the hall clock. It is always fast."

  12. Fast as an adjective (of photographic film):

    More sensitive to light than average.

  1. Fast as an adverb:

    In a firm or secure manner, securely; in such a way as not to be moved; safe, sound .

    Examples:

    "Hold this rope as fast as you can."

  2. Fast as an adverb (of sleeping):

    Deeply or soundly .

    Examples:

    "He is fast asleep."

  3. Fast as an adverb:

    Immediately following in place or time; close, very near .

    Examples:

    "The horsemen came fast on our heels."

  4. Fast as an adverb:

    Quickly, with great speed; within a short time .

    Examples:

    "Do it as fast as you can."

  5. Fast as an adverb:

    Ahead of the correct time or schedule.

    Examples:

    "I think my watch is running fast."

  1. Fast as a noun (British, rail transport):

    A train that calls at only some stations it passes between its origin and destination, typically just the principal stations

  1. Fast as a verb (intransitive):

    To restrict one's personal consumption, generally of food, but sometimes other things, in various manners (totally, temporally, by avoiding particular items), often for religious or medical reasons.

    Examples:

    "Muslims fast during Ramadan and Catholics during Lent."

  1. Fast as a noun:

    The act or practice of abstaining from food or of eating very little food.

  2. Fast as a noun:

    The period of time during which one abstains from or eats very little food.

    Examples:

    "[[Lent]] and [[Ramadan]] are fasts of two [[religion]]s."

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