The difference between Unknown and Well-known

When used as adjectives, unknown means not known, whereas well-known means familiar, famous, renowned or widely known.

Unknown is also noun with the meaning: a variable (usually x, y or z) whose value is to be found.

check bellow for the other definitions of Unknown and Well-known

  1. Unknown as an adjective (sometimes, _, postpositive):

    Not known; unidentified; not well known.

  1. Unknown as a noun (algebra):

    A variable (usually x, y or z) whose value is to be found.

  2. Unknown as a noun:

    Any thing, place, or situation about which nothing is known; an unknown fact or piece of information.

  3. Unknown as a noun:

    A person of no identity; a nonentity

  1. Well-known as an adjective:

    Familiar, famous, renowned or widely known.

  2. Well-known as an adjective (computing, not comparable):

    Generally recognised; reserved for some usual purpose.

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