Social Hierarchy
1st: Imperial Family
2nd: Grand Ducal Houses of the Empire = Kings of Kingdoms
3rd: Ducal Houses of the Empire = Queens, Princesses, and Princes of Kingdoms
4th: Marquess Houses of the Empire = Ducal Houses of Kingdoms
5th: Count Houses of the Empire = Marquess Houses of Kingdoms
6th: Baron Houses of the Empire = Count Houses of Kingdoms
7th: Viscount Houses of the Empire = Baron Houses of Kingdoms
8th: Viscount Houses of Kingdoms
9th: Lower Nobility (Illegitimate children of high nobility who didn't receive titles, or children of noble sons who didn't inherit the main house)
10th: Commoners
Entities the Imperial Family cannot treat lightly: Magic Tower Master, Temple
Kingdoms cannot treat Imperial Nobles lightly.

Imperial Hierarchy
1st: Emperor
2nd: Empress
3rd: Crown Prince, Crown Princess
4th: Princes, Princesses
5th: Concubines

Identification by Name
Imperial names consist of: Given Name, Middle Name (derived from appearance or achievements), and the Empire's Name.
All others use their respective Family Names.

Temple Hierarchy
1st: Pope
2nd: High Priest (Even the Pope cannot treat them lightly)
3rd: Priest
While lower in rank than the Imperial Family, they are entities that cannot be treated lightly.

Magic Tower Hierarchy
1st: Magic Tower Master
2nd: Archmage
3rd: Mage
4th: Lower Mage

National Hierarchy
1st: Empire
2nd: Independent Kingdoms
3rd: Kingdoms that are vassal states of the Empire
4th: Duchies
5th: Duchies that are vassal states of the Empire
Rankings on the continent are higher based on cultural advancement, influence, and scale.

Using nicknames is only permitted between lovers and family. Using them otherwise is a clear act of rudeness. Sending items like accessories, dresses, or shoes (or handkerchiefs and watches for men) to someone is a sign of romantic interest. If a young lord attaches 'Lady' or 'Mademoiselle' after a request to a young lady, it is effectively a confession. If he adds complimentary adjectives (beautiful, dazzling, jewel-like, etc.) before 'Lady' or 'Mademoiselle', it is essentially a public confession.

Intentionally stepping on a partner's foot while dancing is a social signal meaning 'I dislike you.'

A knight kneeling and kissing the back of a lady's hand carries the meaning of a vow: "Everything to you."