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Diadem vs Tiar - What's the difference?

diadem | tiar |

As nouns the difference between diadem and tiar

is that diadem is an ornamental headband worn as a badge of royalty while tiar is (poetic|archaic) a tiara.

As a verb diadem

is to adorn with a diadem; to crown.

diadem

English

(wikipedia diadem)

Noun

(en noun)
  • An ornamental headband worn as a badge of royalty.
  • A crown.
  • Regal power; sovereignty; empire—considered as symbolized by the crown.
  • (heraldry) An arch rising from the rim of a crown (rarely also of a coronet), and uniting with others over its centre.

    • Derived terms

    * diadem lemur * diadem spider

    Verb

    (en verb)
  • To adorn with a diadem; to crown.

    • Anagrams

    * * ----

    tiar

    English

    Noun

    (en noun)
  • (poetic, archaic) A tiara.
    • (Milton)
    (Tennyson)
    (Webster 1913)