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Insomnia vs Sleepless - What's the difference?

insomnia | sleepless |

As a noun insomnia

is (label).

As an adjective sleepless is

characterized by an absence of sleep.

insomnia

English

(wikipedia insomnia)

Noun

  • A sleeping disorder that is known for its symptoms of unrest and the inability to sleep.

    • Derived terms

    * insomniac

    Synonyms

    * sleeplessness

    Related terms

    * hypersomnia

    sleepless

    English

    Adjective

    (en adjective)
  • Characterized by an absence of sleep.
    • I spent a sleepless night worrying about the exams.

    Derived terms

    * sleeplessly * sleeplessness