noun, noun which may take the genitive case particle 'no'
archduke
A historical European noble title, ranking above a duke but below a king. Used in contexts such as the Habsburg monarchy. Can also function adjectivally with の, as in 大公の地位 (the position of archduke).
The Archduke of Austria was a member of the Habsburg family.
The title of archduke was used in medieval Europe.