Archduke and T-square

Archduke noun - A sovereign prince of the former ruling house of Austria.

T-square and archduke are semantically related. In some cases you can use "T-square" instead a noun "Archduke".

T-square noun - A square used by draftsmen to draw parallel lines.

Archduke and T-square are semantically related. Sometimes you can use "Archduke" instead a noun phrase "T-square".